Part of Seaboard Transport GVroup)
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If you click on a Carrier Name link, the site will direct you to separate page with additional detail on the carrier.
I have donated many of these in a display to the Iowa 80 Truck Museum (Walcott, IA ) and the American Truck Historical Society (Kansas City, MO )
If you have a patch that you would like me to add to this site please send an image of it to me Contact Me
If you see an error in the data or a link does not work (I have been building this site for over 1 ½ years and there are thousands
of images, lines of code, and links, so there are bound to be a few that don’t work that I may not be aware of) Contact Me
| Carrier | City | State | Dot# | MC# | Status | Website | Patch ID | Patch Image |
|---|---|---|---|---|---|---|---|---|
| Aero Mayflower Transit | Indianapolis | IN | 125563 | MC-002934 | Active | website | O 15 | |
| Grayson Mitchell Inc | Emporia | KS | 291180 | MC-187492 | Revoked 2010 | C 01 | | |
| LTI - Milky Way | Yakima | WA | 254079 | MC-170078 | Active | website | C 02 | |
| M & A Motor Transit Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M & C Transfer | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M & D Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M & G Convoy Inc | Troy | MI | 26401 | MC-020722 | T 1982 | C 01 | | |
| M & H Transportation | Dallas | TX | 0 | Unknown | Unknown | C 01 | | |
| M & I Freight Line | Indianapolis | IN | 12330 | MC-067841 | Active | C 01 | | |
| M & M Transportation Co | Cambridge | MA | 0 | MC-069275 | Clsd 1978 | C 01 | | |
| M & M Transportation Co | Cambridge | MA | 0 | MC-069275 | Clsd 1978 | C 02 | | |
| M & M Transportation Co | Cambridge | MA | 0 | MC-069275 | Clsd 1978 | C 03 | | |
| M & M Transportation Co | Cambridge | MA | 0 | MC-069275 | Clsd 1978 | C 04 | | |
| M & M Transportation Co | Cambridge | MA | 0 | MC-069275 | Clsd 1978 | C 05 | | |
| M & M Transportation Co | Cambridge | MA | 0 | MC-069275 | Clsd 1978 | C 06 | | |
| M & P Transport | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M & P Transport Ltd | Edmonton | AB | 0 | Unknown | Unknown | CR 01 | | |
| M & S Car Freighters | Unknown | XX | 0 | Unknown | Unknown | AU 01 | | |
| M & S Transport | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M & S Trucking Co | Meadville | MO | 0 | Unknown | Unknown | C 01 | | |
| M A T | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M B Transportation Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M Baldson Trucking Ltd | Pickering | ON | 323744 | MC-169537 | Inactive | C 01 | | |
| M Bruenger Trucking Co | Wichita | KS | 2243514 | MC-124172 | Revoked 1999 | C 01 | | |
| M Bruenger Trucking Co | Wichita | KS | 2243514 | MC-124172 | Revoked 1999 | C 02 | | |
| M C Slater Inc | Granite City | IL | 78528 | MC-107757 | Revoked 2000 | C 01 | | |
| M C Slater Inc | Granite City | IL | 78528 | MC-107757 | Revoked 2000 | C 02 | | |
| M C X | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M Campbell & Assoc | Stockton | CA | 0 | Unknown | Unknown | C 01 | | |
| M E T Transport Inc | Unknown | XX | 0 | Unknown | Unknown | H 01 | | |
| M Fudpucker Fast Freight Inc | Unknown | WV? | 0 | Unknown | Unknown | C 01 | | |
| M G M Transport Corp | High Point | NC | 106377 | MC-001117 | OOS 2012 | C 01 | | |
| M G M Transport Corp | High Point | NC | 106377 | MC-001117 | OOS 2012 | C 02 | | |
| M G M Transport Corp | High Point | NC | 106377 | MC-001117 | OOS 2012 | C 03 | | |
| M G M Transport Corp | High Point | NC | 106377 | MC-001117 | OOS 2012 | C 04 | | |
| M H Transport Ltd | Abbotsford | BC | 0 | Unknown | Unknown | website | C 01 | |
| M I I Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M L Schneider Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M Lynch Transportation Inc | Bel Air | MD | 241201 | MC-172193 | Revoked 2000 | C 01 | | |
| M M Tank Lines | Washington | DC | 0 | MC-123067 | T 1981 | C 01 | | |
| M Moran Transportation Lines Inc | Buffalo | NY | 0 | Unknown | Merged1942 | C 01 | | |
| M R & R Trucking Co | Crestview | FL | 89894 | MC-105881 | Sold 1978 | C 01 | | |
| M S Carriers Inc | Memphis | TN | 160095 | MC-145072 | Revoked 2023 | O 00 | | |
| M S Carriers Inc | Memphis | TN | 160095 | MC-145072 | Revoked 2023 | C 01 | | |
| M S Carriers Inc | Memphis | TN | 160095 | MC-145072 | Revoked 2023 | O 01 | | |
| M S Carriers Inc | Memphis | TN | 160095 | MC-145072 | Revoked 2023 | C 02 | | |
| M S Carriers Inc | Memphis | TN | 160095 | MC-145072 | Revoked 2023 | O 02 | | |
| M S Carriers Inc | Memphis | TN | 160095 | MC-145072 | Revoked 2023 | C 03 | | |
| M W Ettinger Inc | St Paul | MN | 184666 | MC-152261 | Revoked 1990 | C 01 | | |
| M W Ettinger Inc | St Paul | MN | 184666 | MC-152261 | Revoked 1990 | C 02 | | |
| M W Trucking Inc | Unknown | WI | 144956 | MC-194449 | Revoked 2017 | C 01 | | |
| M/M's Express | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| M-A Transportation Co | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mabe's Trucking Co Inc | Eden | NC | 517375 | MC-222306 | Active | website | C 01 | |
| Mabe's Trucking Co Inc | Eden | NC | 517375 | MC-222306 | Active | website | C 02 | |
| MacCosham Van Lines | Edmonton | AB | 135606 | MC-000286 | Revoked 1989 | C 01 | | |
| MacCosham Van Lines | Edmonton | AB | 135606 | MC-000286 | Revoked 1989 | C 02 | | |
| MacCosham Van Lines | Edmonton | AB | 135606 | MC-000286 | Revoked 1989 | C 03 | | |
| Machinery Moving Inc | Columbus | IN | 261123 | MC-174878 | Revoked 2009 | C 01 | | |
| Machinery Transports of Illinois Inc | Morton | IL | 192077 | MC-154623 | Revoked 1995 | C 01 | | |
| Machise Interstate Transport Co | Hammonton | NJ | 18755 | MC-123391 | Revoked 1966 | C 01 | | |
| Machise Interstate Transportation Co Inc | Hammonton | NJ | 18755 | MC-123391 | Revoked 1996 | C 01 | | |
| Mack Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mackie Moving and Storage | Oshawa | ON | 279264 | MC-276242 | Revoked 2022 | C 01 | | |
| MacKinnon Transport Ltd | Guelph | ON | 469269 | MC-241956 | Revoked 2018 | C 01 | | |
| Mac's | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mac's | Unknown | XX | 0 | Unknown | Unknown | C 02 | | |
| Macy Movers Inc | Hayward | CA | 125550 | MC-079658 | Active | website | C 01 | |
| Madison Freight Systems Inc | Waunakee | WI | 240883 | MC-146007 | Revoked 2007 | C 01 | | |
| Madison Transfer | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Maggini & Son Trucking LLC | Riverdale | CA | 545697 | MC-554811 | Active | C 01 | | |
| Magnolia Transportation Co | Houston | TX | 36640 | MC-080730 | Revoked 2002 | C 01 | | |
| Magnum Express Inc | Plainfield | IN | 724929 | MC-332046 | Active | C 01 | | |
| Maiers Motor Freight | Saginaw | MI | 71997 | MC-059124 | Revoked 1990 | C 01 | | |
| Maiers Motor Freight | Saginaw | MI | 71997 | MC-059124 | Revoked 1990 | C 02 | | |
| Mail Contractors of America | Nort Little Rock | AR | 448797 | MC-97279 | Revoked 2022 | C 01 | | |
| Maine Freightways | Portland | ME | 0 | MC-2307 | No record | C 01 | | |
| Maini Cartage & Distributing | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mainline Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mairs Transport Ltd | Coquitlam | BC | 8296 | MC119390 | Revoked 1993 | C 01 | | |
| Maislin Industries Inc Van Lines Ltd | LaSalle | QC | 240883 | MC-146007 | Clsd 1983 | C 01 | | |
| Maislin Transport Corp | Unknown | XX | 0 | Unknown | Clsd 1983 | C 01 | | |
| Maislin Transport Ltd | LaSalle | QC | 49580 | MC-108006 | Revoked 1997 | C 02 | | |
| Maislin Transport Ltd | LaSalle | QC | 49580 | MC-108006 | Revoked 1997 | C 03 | | |
| Maislin Transport Ltd | LaSalle | QC | 49580 | MC-108006 | Revoked 1997 | C 04 | | |
| Maislin Transport Ltd | LaSalle | QC | 49580 | MC-108006 | Revoked 1997 | C 05 | | |
| Maislin Transport Ltd | LaSalle | QC | 49580 | MC-108006 | Revoked 1997 | C 06 | | |
| Maislin Transport Ltd | LaSalle | QC | 49580 | MC-108006 | Revoked 1997 | C 07 | | |
| Maislin Transport of Del | Lasalle | QC | 49581 | MC-060580 | Clsd 1983 | C 01 | | |
| Majors Transit Inc | Caneyville | KY | 105218 | MC-134038 | Active | C 01 | | |
| Majors Transit Inc | Caneyville | KY | 105218 | MC-134038 | Active | C 02 | | |
| Malone & Hyde Inc | Unknown | XX | 0 | Unknown | Unknown | X 01 | | |
| Malone Freight Lines Inc | Trussville | AL | 105790 | MC-075840 | T 2003 | C 01 | | |
| Malone Freight Lines Inc | Trussville | AL | 105790 | MC-075840 | T 2003 | C 02 | | |
| Malone Freight Lines Inc | Trussville | AL | 105790 | MC-075840 | T 2003 | C 03 | | |
| Mammoet | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Manatts Transportation | Brooklyn | IA | 87392 | MC-182442 | Active | website | C 01 | |
| Manatts Transportation | Brooklyn | IA | 87392 | MC-182442 | Active | website | C 02 | |
| Manchester Transport | Manchester | CT | 252367 | MC-285183 | Active | C 01 | | |
| Manfredi Motor Transit Co | Newberry | OH | 120699 | MC-128302 | Revoked 2005 | C 01 | | |
| Manfredi Motor Transit Co | Newberry | OH | 120699 | MC-128302 | Revoked 2005 | C 02 | | |
| Manitoulin Group | Gore Bay | ON | 0 | Unknown | Unknown | C 01 | | |
| Manitoulin North America | Gore Bay | ON | 0 | Unknown | Unknown | C 01 | | |
| Manitoulin Transport | Gore Bay | ON | 291307 | MC-182736 | Not Authorized | C 01 | | |
| Manitoulin Transport | Gore Bay | ON | 291307 | MC-182736 | Not Authorized | C 02 | | |
| Manitoulin Transport | Gore Bay | ON | 291307 | MC-182736 | Not Authorized | C 03 | | |
| Manley Transfer Co Inc | Chanute | KS | 2629 | MC-058902 | Revoked 1988 | C 01 | | |
| Manley Truck Line Inc | Leawood | KS | 2629 | MC-058902 | Revoked 1988 | C 01 | | |
| Mannion Transportation Ltd | Edmonton | AB | 0 | Unknown | Unknown | C 01 | | |
| Mantei's Transport Ltd Part of Seaboard Transport GVroup) | Calgary | AB | 402058 | MC-225312 | Active | website | C 01 | |
| Mantei's Transport Ltd | Calgary | AB | 402058 | MC-225312 | Active | website | C 02 | |
| Mantei's Transport Ltd | Calgary | AB | 402058 | MC-225312 | Active | website | H 03 | |
| Marathon Freight Lines Inc | Noxapater | MS | 163968 | MC-145084 | Revoked 1996 | C 01 | | |
| Marathon Transportation Co Inc | Los Angeles | CA | 0 | Unknown | Unknown | C 01 | | |
| Marine Trucking Inc | Houston | TX | 328125 | MC-206432 | Revoked 1989 | C 01 | | |
| Maris Transport Ltd | Oakville | ON | 26407 | MC-125924 | Revoked 1981 | C 02 | | |
| Maritime Ontario Freight Lines Ltd | Mississauga | ON | 19153 | MC-177876 | Active | website | C 01 | |
| Maritime Ontario Freight Lines Ltd | Mississauga | ON | 19153 | MC-177876 | Active | website | C 02 | |
| Market Express LLC | Portland | OR | 2885047 | MC-969366 | Active | website | CH 01 | |
| Market Transport Ltd | Portland | OR | 62164 | MC-140827 | Active | C 01 | | |
| Mark's Motor Freight Corp | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Maroadi Transfer & Storage Inc | Versailles | PA | 137748 | MC-156338 | Active | website | C 01 | |
| Marshall Service Inc | Newfield | NJ | 23624 | MC-123274 | Revoked 1995 | C 01 | | |
| Marshall Trucking Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Martel Express Ltd | Farnham | QC | 19256 | MC-128701 | Revoked 2008 | C 01 | | |
| Marten Transport Ltd | Mondovi | WI | 74432 | MC-103798 | Active | website | C 01 | |
| Marten Transport Ltd | Mondovi | WI | 74432 | MC-103798 | Active | website | C 02 | |
| Marten Transport Ltd | Mondovi | WI | 74432 | MC-103798 | Active | website | C 03 | |
| Marten Transport Ltd | Mondovi | WI | 74432 | MC-103798 | Active | website | C 04 | |
| Marten Transport Ltd | Mondovi | WI | 74432 | MC-103798 | Active | website | C 05 | |
| Marten Transport Ltd | Mondovi | WI | 74432 | MC-103798 | Active | website | C 06 | |
| Martinez Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Martini Inc | Drums | PA | 211995 | MC-161407 | Revoked 2010 | C 01 | | |
| Martini Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Martrans | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Marty's Express Inc | Philadelphia | PA | 113525 | MC-039249 | Revoked 1997 | C 01 | | |
| Marty's Express Inc | Philadelphia | PA | 113525 | MC-039249 | Revoked 1997 | C 02 | | |
| Maryland Transportation Co | Baltimore | MD | 88559 | MC-059292 | Revoked 1986 | C 01 | | |
| Mashburn Trucking Inc | Childress | TX | 37444 | MC-159666 | Revoked 1998 | C 01 | | |
| Mason and Dixon | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | O 01 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | C 02 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | O 02 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | C 03 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | C 04 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | O 04 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | C 05 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | O 05 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | C 06 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | A 50 | | |
| Mason and Dixon Lines Inc | Kingsport | TN | 41208 | MC-059583 | Clsd 1984 | O SC | | |
| Mason and Dixon Tank Lines Inc | Kingsport | TN | 41207 | MC-61403 | Inactive | C 01 | | |
| Mason and Dixon Tank Lines Inc | Kingsport | TN | 41207 | MC-61403 | Inactive | C 02 | | |
| Mass Transport Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mass Transportation Inc | Cambridge | MA | 349190 | MC-097244 | Revoked 1991 | C 01 | | |
| Massolo Trucking | Salinas | CA | 383185 | MC-212513 | Active | website | C 01 | |
| Masur Trucking Co | West Chester Township | OH | 330273 | MC-164209 | Active | website | C 01 | |
| Matco Transportation Systems | Calgary | AB | 0 | Unknown | Unknown | C 01 | | |
| Mathews Trucking Co | Baxley | GA | 363803 | MC-236589 | Revoked 2010 | C 01 | | |
| Mathews Trucking Co Inc | Shreveport | MS | 0 | Unknown | Unknown | C 01 | | |
| Mathews Trucking Co Inc | Shreveport | MS | 0 | Unknown | Unknown | C 02 | | |
| Matin Gas Transport | Unknown | XX | 0 | Unknown | Unknown | SD 01 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 01 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 02 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 04 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 05 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 06 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 07 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 08 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 09 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | C 10 | | |
| Matlack Inc | Lansdowne | PA | 113527 | MC-107403 | Clsd 2001 | A 100 | | |
| Matman | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Matoskah Trucking Inc | Unknown | MA | 0 | Unknown | Unknown | C 01 | | |
| Matt Shuman Trucking | Clay City | IL | 660609 | MC-309505 | Revoked 2019 | C 03 | | |
| Matuszko Trucking Inc | Northampton | MA | 56064 | MC-143214 | Revoked 2020 | C 01 | | |
| Maurice Transport Co | Morton | IL | 354241 | MC-117692 | T 1993 | C 01 | | |
| Maust Transfer Co | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Maverick Express Inc | Battle Creek | MI | 613113 | MC-294144 | Active | website | C 01 | |
| Maverick Transportation Inc | North Little Rock | AR | 178538 | MC-150231 | Active | website | C 01 | |
| Mawson & Mawson Inc | Warrewn | OH | 113529 | MC-76 | Active | website | CH 01 | |
| Maxima Freight Lines | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Maxum | Unknown | XX | 0 | Unknown | Unknown | ? 01 | | |
| Maxwell Tank Lines Inc | Channahon | IL | 249839 | MC-172229 | Active | website | C 01 | |
| May Moving of Goldsberg | Channahon | IL | 249839 | MC-172229 | Active | C 01 | | |
| May Trucking Co | Payette | ID | 94081 | MC-128527 | Active | C 01 | | |
| May Trucking Co | Payette | ID | 94081 | MC-128527 | Active | C 02 | | |
| May/Mar Trucking | Birmingham | AL | 491291 | MC-213768 | Revoked 2002 | C 01 | | |
| Maybelle Transport Co | Lexington | NC | 0 | MC-114106 | Expired | C 01 | | |
| Mayer Truck Line | Jamestown | ND | 35352 | MC-120978 | Active | website | C 01 | |
| Mayfield Trucking Co Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mayflower of Texas | Garland | TX | 284262 | MCV_191398 | Revoked 1986 | C 01 | | |
| Mayflower Transit | Carmel | IN | 125563 | MC-002934 | Active | website | C 01 | |
| Mayflower Transit | Carmel | IN | 125563 | MC-002934 | Active | website | C 04 | |
| Mayflower Transit | Carmel | IN | 125563 | MC-002934 | Active | website | C 05 | |
| Mayflower Transit | Carmel | IN | 125563 | MC-002934 | Active | website | O 80 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 02 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | O 02 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 04 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 05 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 06 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | O 10 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | O 11 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | O 13 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 14 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 15 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 16 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 18 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 19 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 20 | |
| Mayflower Van Lines | Carmel | IN | 697810 | MC-323201 | Active | website | C 21 | |
| Mays Transfer Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mc Burney Transport Ltd | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mc Graw Trucking Inc | Cana | VA | 2671190 | None | Not Authorized | C 01 | | |
| Mc Kay's Truck Line | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mc Kinley Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mc Murty Module Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| MC Tank Transport Inc | West Chester | OH | 81405 | MC-116867 | Active | website | C 01 | |
| McAlister Trucking Co | Abilene | TX | 115547 | MC-023618 | Revoked 1991 | C 01 | | |
| McAplin | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McArthur Express | Cambridge | ON | 753097 | MC-222471 | Revoked 2009 | C 01 | | |
| McBride's Express Inc | St Louis | MO | 94198 | MC-112049 | Revoked 1985 | C 01 | | |
| McBride's Express Inc | St Louis | MO | 94198 | MC-112049 | Revoked 1985 | C 02 | | |
| McBurney Transport Ltd | Hagersville | ON | 20557 | MC-150601 | Revoked 2009 | C 01 | | |
| MCC Transportation Corp | Hope | AR | 0 | Unknown | Unknown | C 01 | | |
| MCC Transportation Corp | Hope | AR | 0 | Unknown | Unknown | C 02 | | |
| McCain Transport | Toronto | CA | 0 | Unknown | Unknown | C 01 | | |
| McCall's Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McCallum Auto Transport Inc | Oshawa | ON | 16777 | MC-127284 | Revoked 1991 | C 01 | | |
| McCallum Auto Transport Inc | Oshawa | ON | 16777 | MC-127284 | Revoked 1991 | C 04 | | |
| McCallum Transport Inc | Oshawa | ON | 16777 | MC-127284 | Revoked 1991 | C 02 | | |
| McCallum Transport Inc | Oshawa | ON | 16777 | MC-127284 | Revoked 1991 | C 03 | | |
| McClain Dray Line | Eau Clair | WI | 0 | MC-00010207 | Unknown | C 01 | | |
| McCleave Leasing Ltd | Brampton | ON | 422078 | NONE | Not Authorized | C 01 | | |
| McCord Bros Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McCorkle Truck Line Inc | Oklahoma City | OK | 34278 | MC-136711 | Revoked 2022 | C 01 | | |
| McCormack Transportation | Rock Rapids | IA | 65911 | MC-430262 | Revoked 1988 | C 01 | | |
| McCracken Motor Freight Inc | Portland | OR | 11087 | MC-000941 | Active | website | C 01 | |
| McCracken Van & Storage | Portland | OR | 11087 | MC-941 | Active | C 01 | | |
| McCracken Van & Storage | Portland | OR | 11087 | MC-941 | Active | C 02 | | |
| McDaniel Freight Lines Inc | Crawfordsville | IN | 0 | 11184 | Unknown | C 01 | | |
| McDonnell Douglas Truck Services Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McElroy Truck Lines | Cuba | AL | 271424 | MC-142680 | Active | C 01 | | |
| McGee Trucking Co | Bostic | NC | 172122 | MC-147333 | Revoked 1996 | H 01 | | |
| McGil Special Services | Marietta | GA | 92756 | MC-111545 | Revoked 2009 | C 01 | | |
| McGil Special Services | Marietta | GA | 92756 | MC-111545 | Revoked 2009 | O 01 | | |
| McGrath Cartage | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McGrath Transport | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McGriff Transportation Inc | Cullman | AL | 64559 | 0 | Unknown | C 01 | | |
| McGuire Transportation Inc | Cleveland | GA | 609441 | MC-292878 | Revoked 2001 | C 01 | | |
| McGuire Transportation Inc | Cleveland | GA | 609441 | MC-292878 | Revoked 2001 | C 02 | | |
| MCH Transportation Co | Jackson | MS | 89722 | MC-177655 | Active | website | C 01 | |
| McHenry Truck Line Inc | McHenry | IL | 104197 | MC-140283 | Revoked 2021 | C 01 | | |
| McHenry Truck Line Inc | McHenry | IL | 104197 | MC-140283 | Revoked 2021 | C 02 | | |
| MCI Express Inc | Medley | FL | 0 | Unknown | Unknown | C 01 | | |
| MCI Express Inc | Medley | FL | 0 | Unknown | Unknown | C 02 | | |
| MCI Express Inc | Medley | FL | 0 | Unknown | Unknown | C 03 | | |
| McIlvaine Trucking Inc | Medley | FL | 0 | Unknown | Unknown | C 02 | | |
| McIntyre Trucking | Unknown | XX | 0 | Unknown | Unknown | C 04 | | |
| McIver Group Transport | Eromanga | QLD | 0 | Unknown | Unknown | F 01 | | |
| McKay Truck Line | Albany | OR | 62137 | MC-028956 | Revoked 2011 | C 01 | | |
| McKenzie Tank Lines Inc | Tallahassee | FL | 89896 | MC-112520 | Revoked 2019 | C 01 | | |
| McKenzie Tank Lines Inc | Tallahassee | FL | 89896 | MC-112520 | Revoked 2019 | C 02 | | |
| McKenzie Tank Lines Inc | Tallahassee | FL | 89896 | MC-112520 | Revoked 2019 | C 03 | | |
| McKenzie Trucking Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McKeown Transportation Co Inc | Western Springs | IL | 104177 | MC-003018 | Revoked 2001 | C 01 | | |
| McKibben Motor Service Inc | Cincinnati | OH | 152731 | MC-133541 | T 1983 | C 01 | | |
| McKinlay Transport Ltd | Milton | ON | 26400 | MC-123282 | Revoked 2003 | C 01 | | |
| McKinlay Transport Ltd | Milton | ON | 26400 | MC-123282 | Revoked 2003 | C 02 | | |
| McKinlay Transport Ltd | Milton | ON | 26400 | MC-123282 | Revoked 2003 | C 03 | | |
| McKinley Trucking | Carson City | MI | 220908 | MC-148394 | Revoked 2018 | C 01 | | |
| McKinley Trucking | Carson City | MI | 220908 | MC-148394 | Revoked 2018 | C 02 | | |
| McKinley Trucking | Carson City | MI | 220908 | MC-148394 | Revoked 2018 | C 03 | | |
| McKinney Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McLain | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mclean Bros Trucking Ltd | Drumheller | AB | 0 | Unknown | Unknown | website | H 01 | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 01 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 02 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 03 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 04 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 05 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 06 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 07 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 08 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 09 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 10 | | |
| McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | C 11 | | |
| McLean Trucking Co McLean Trucking Co | Winston-Salem | NC | 97161 | MC-031389 | Clsd 1986 | A 50 | | |
| McLeod Express LLC | Decatur | IL | 992986 | MC-420333 | Active | website | C 01 | |
| McLeod Trucking & Rigging Co Inc | Charlotte | NC | 353958 | MC-302413 | Active | C 01 | | |
| Mcllvaine Trucking Inc | Wooster | OH | 437170 | MC-240787 | Inactive | C 01 | | |
| Mcllvaine Trucking Inc | Wooster | OH | 437170 | MC-240787 | Inactive | C 03 | | |
| Mclure North American | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mcminnville Freight Line Inc | McMinnville | TN | 36743 | MC-120582 | Revoked 1990 | C 01 | | |
| Mcminnville Freight Line Inc | McMinnville | TN | 36743 | MC-120582 | Revoked 1990 | C 02 | | |
| Mcminnville Freight Line Inc | McMinnville | TN | 36743 | MC-120582 | Revoked 1990 | C 03 | | |
| McNabb Wadsworth Trucking Co | Kingsport | TN | 41209 | MC-139207 | Revoked 1991 | C 01 | | |
| McNair Transport Inc | Thomson | GA | 962238 | MC-450238 | Revoked 2021 | C 01 | | |
| McNally | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| McNay Truck Line | Quincy | IL | 150617 | MC-145217 | Active | website | C 01 | |
| McNay Truck Line | Quincy | IL | 150617 | MC-145217 | Active | website | C 02 | |
| McNay Truck Line | Quincy | IL | 150617 | MC-145217 | Active | website | C 03 | |
| McNay Truck Line | Quincy | IL | 150617 | MC-145217 | Active | website | C 04 | |
| McNicholas | Grand Rapids | MI | 174756 | MC-147669 | IR 1991 | C 01 | | |
| McNitt Contract Carriers | Grand Rapids | MI | 174756 | MC-147669 | Revoked 1992 | H 01 | | |
| Mcphee Interstate Freight Distribution | Homebush | NSW | 0 | Unknown | Unknown | AU 01 | | |
| MCST Preferred Transportation Inc | Jersey City | NJ | 682922 | MC-317789 | Revoked 2004 | C 01 | | |
| McVay Transfer & Storage Inc | Kent | OH | 0 | Unknown | Unknown | C 01 | | |
| MD Transport Systems | Auburndale | FL | 123598 | MC-128555 | AI 1999 | C 01 | | |
| MD Transport Systems | Auburndale | FL | 123598 | MC-128555 | AI 1999 | C 02 | | |
| MD Transport Systems Inc | Auburndale | FL | 123598 | MC-128555 | Revoked 1999 | C 03 | | |
| MDR Cartage Inc | Jonesboro | AR | 178539 | MC-150202 | Active | C 01 | | |
| MDR Cartage Inc | Jonesboro | AR | 178539 | MC-150202 | Active | C 02 | | |
| Meade Trucking Co Inc | Verona | VA | 404752 | MC-339754 | Active | C 01 | | |
| Meadors Freight Line Inc | Atlanta | GA | 92780 | MC-117604 | Revoked 1982 | C 01 | | |
| Mealer Trucking Co | Verona | VA | 404752 | 404752 | Active | C 01 | | |
| Medalta Transport Ltd | Calgary | AB | 0 | Unknown | NC 1991 | C 01 | | |
| Medalta Transport Ltd | Calgary | AB | 0 | Unknown | NC 1991 | C 02 | | |
| Megantic Transport Ltee | Megantic | QC | 19227 | MC-126622 | Revoked 2002 | C 01 | | |
| Meiborg Bros Inc | Rockford | IL | 190639 | MC-200038 | Active | website | CH 01 | |
| Mel Cox Transport | Commanche | OK | 2198358 | None | Not Authorized | C 01 | | |
| Melburn Truck Lines | Toronto | ON | 0 | MC-198509 | Revoked 1999 | C 01 | | |
| Melrose Transport Systems Inc | Cicero | IL | 247161 | MC-100694 | Revoked 2019 | C 01 | | |
| Mel's Express Ltd | Bradford | ON | 20576 | MC-145429 | Revoked 1989 | C 01 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 01 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 02 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 03 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 04 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 04 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 05 | | |
| Melton Truck Lines Inc | Tulsa | OK | 34666 | MC-100666 | Active | C 06 | | |
| Melvin Trucking Co | Peoria | IL | 0 | MC-006894 | Sold 1963 | C 01 | | |
| Meneses | Unknown | XX | 0 | Unknown | Unknown | ? 01 | | |
| Mercer Motor Freight Inc | Trenton | NJ | 17191 | MC-1548 | T 1982 | C 01 | | |
| Mercer Transportation Co | Louisville | KY | 154712 | MC-143059 | Active | website | C 01 | |
| Mercer Transportation Co | Louisville | KY | 154712 | MC-143059 | Active | website | O 01 | |
| Mercer Transportation Co | Louisville | KY | 154712 | MC-143059 | Active | website | C 03 | |
| Mercer Trucking Co Inc | Spokane | WA | 27479 | MC-043685 | Active | website | C 01 | |
| Mercer Trucking Co Inc | Spokane | WA | 27479 | MC-043685 | Active | website | CH 02 | |
| Merchants Cartage Inc | St Paul | MN | 0 | Unknown | Unknown | C 01 | | |
| Merchants Distributors Inc | Hickory | NC | 2224864 | MC-355669 | Active | website | X 01 | |
| Merchants Distributors Inc | Hickory | NC | 2224864 | MC-355669 | Active | website | X 02 | |
| Merchants Fast Motor Lines Inc | Abilene | TX | 115596 | MC-002228 | Clsd 1997 | C 01 | | |
| Merchants Fast Motor Lines Inc | Abilene | TX | 115596 | MC-002228 | Clsd 1997 | C 02 | | |
| Merchants Fast Motor Lines Inc | Abilene | TX | 115596 | MC-002228 | Clsd 1997 | C 03 | | |
| Merchants Fast Motor Lines Inc | Abilene | TX | 115596 | MC-002228 | Clsd 1997 | C 04 | | |
| Merchants Fast Motor Lines Inc | Abilene | TX | 115596 | MC-002228 | Clsd 1997 | C 05 | | |
| Merchants Fast Motor Lines Inc | Abilene | TX | 115596 | MC-002228 | Clsd 1997 | C 06 | | |
| Merchants Freight System Inc | Terre Haute | IN | 0 | MC-073262 | Sold 1968 | C 01 | | |
| Merchants Freight System Inc | Terre Haute | IN | 0 | MC-073262 | Sold 1968 | C 02 | | |
| Merchants Motor Freight Inc | St Paul | MN | 124813 | MC-076266 | Active | C 01 | | |
| Merchants Truck Line Inc | New Albany | MS | 476003 | MC-077972 | Revoked 1994 | C 01 | | |
| Merchants Truck Line Inc | New Albany | MS | 476003 | MC-077972 | Revoked 1994 | C 02 | | |
| Merchants Truck Lines Inc | New Albany | MS | 476003 | MC-077972 | Revoked 1994 | C 03 | | |
| Mercury Distribution Carriers Inc | Elkridge | MD | 250554 | MC-173556 | Revoked 1998 | C 01 | | |
| Mercury Distribution Carriers Inc | Elkridge | MD | 250554 | MC-173556 | Revoked 1998 | C 02 | | |
| Mercury Freight Lines Inc | Mobile | AL | 92633 | MC-113528 | Revoked 1985 | C 01 | | |
| Mercury Freight Lines Inc | Mobile | AL | 92633 | MC-113528 | Revoked 1985 | C 02 | | |
| Mercury Motor Express Inc | Tampa | FL | 63275 | MC-115093 | Revoked 2007 | C 01 | | |
| Mercury Motor Express Inc | Tampa | FL | 63275 | MC-115093 | Revoked 2007 | O 01 | | |
| Mercury Motor Express Inc | Tampa | FL | 63275 | MC-115093 | Revoked 2007 | C 02 | | |
| Mercury Motor Express Inc | Tampa | FL | 63275 | MC-115093 | Revoked 2007 | C 03 | | |
| Mercury Motor Express Inc | Tampa | FL | 63275 | MC-115093 | Revoked 2007 | C 05 | | |
| Mercury Motor Express Inc | Tampa | FL | 63275 | MC-115093 | Revoked 2007 | C 06 | | |
| Mercury Motor Freight Lines Inc | St Paul | MN | 0 | MC-103017 | R<1980 | C 01 | | |
| Mercury Motor Freight Lines Inc | St Paul | MN | 0 | MC-103017 | R<1980 | C 02 | | |
| Mercury Motors Express Inc | St Paul | MN | 0 | MC-103017 | R<1980 | C 04 | | |
| Mercury Motors Inc | Fort Smith | AR | 63465 | MC-059496 | Sold 1975 | C 01 | | |
| Mercury Motors Inc | Fort Smith | AR | 63465 | MC-059496 | Sold 1975 | C 02 | | |
| Merlin | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Merlin Express | Unknown | XX | 0 | Unknown | Unknown | O 01 | | |
| Merlin Transport Ltd | Edmonton | AB | 308108 | MC-206326 | Revoked 1989 | C 01 | | |
| Merlin Transport Ltd | Edmonton | AB | 308108 | MC-206326 | Revoked 1989 | C 02 | | |
| Merlin Transport Ltd | Edmonton | AB | 308108 | MC-206326 | Revoked 1989 | C 03 | | |
| Merlin Transport Ltd | Edmonton | AB | 308108 | MC-206326 | Revoked 1989 | A 25 | | |
| Merrill Transport Co | Portland | ME | 252388 | MC-003252 | Revoked 1993 | C 01 | | |
| Merrill Transport Co | Portland | ME | 252388 | MC-003252 | Revoked 1993 | C 02 | | |
| Merritt Transportation | Mobile | AL | 534508 | MC-168787 | Revoked 1997 | C 01 | | |
| Merritt Trucking Co Inc | Greensboro | NC | 219519 | MC-159189 | Revoked 2109 | C 01 | | |
| Merv Towsend Trucking Ltd | Unknown | BC | 0 | Unknown | Unknown | C 01 | | |
| Mesilla Valley Transportation | Las Cruces | NM | 270179 | MC-186190 | Active | website | C 01 | |
| Mesilla Valley Transportation | Las Cruces | NM | 270179 | MC-186190 | Active | website | C 02 | |
| Messina Trucking Inc | Shelby Township | MI | 1322113 | MC-5881436 | Active | website | C 01 | |
| Metal Transport Inc | Lewistown | PA | 10653 | MC-082509 | Revoked 1987 | C 01 | | |
| Metro Hauling | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Metro United Van Lines | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Metropolitan Truck Lines | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Metropolitan Trucking Inc | Maywood | NJ | 39717 | MC-008973 | Revoked 2022 | C 01 | | |
| Mexi-Cana Reefer Service Ltd | Surry | BC | 8303 | MC-127587 | Revoked 1996 | C 01 | | |
| Meyer Transportation Inc | E St Louis | MO | 506186 | MC-294295 | Revoked 2003 | C 01 | | |
| Meyers Transport Ltd | Belleville | ON | 261213 | MC-174762 | Revoked 2017 | C 01 | | |
| Miami Transportation Co Inc of Indiana | Cincinnati | OH | 0 | MC-052743 | Revoked 1967 | C 01 | | |
| Miami Valley Transport Inc | Vandalia | OH | 1759405 | MC-643333 | Revoked 2009 | C 01 | | |
| Michigan & Nebraska Transit Co Inc | Kalamazoo | MI | 75825 | MC-082492 | Revoked 1987 | SD 00 | | |
| Michigan Associated Express | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Michigan Cartage Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Michigan Delivery | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Michigan Express Inc | Grand Rapids | MI | 75935 | MC-067818 | Sold 1983 | C 01 | | |
| Michigan Express Inc | Grand Rapids | MI | 75935 | MC-067818 | Sold 1983 | C 02 | | |
| Michigan Express Inc | Grand Rapids | MI | 75935 | MC-067818 | Sold 1983 | CR 03 | | |
| Mickey Plyler Trucking Inc | Pageland | SC | 338121 | MC-262933 | Revoked 2007 | C 01 | | |
| Mickey Plyler Trucking Inc | Pageland | SC | 338121 | MC-262933 | Revoked 2007 | C 01 | | |
| Mid American Freight Systems Ltd | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid American Lines Inc | Kansas City | MO | 88864 | MC-5888 | Revoked 1991 | C 01 | | |
| Mid American Lines Inc | Kansas City | MO | 88864 | MC-5888 | Revoked 1991 | C 02 | | |
| Mid American Lines Inc | Kansas City | MO | 88864 | MC-5888 | Revoked 1991 | C 03 | | |
| Mid American Lines Inc | Kansas City | MO | 88864 | MC-5888 | Revoked 1991 | C 04 | | |
| Mid American Lines Inc | Kansas City | MO | 88864 | MC-5888 | Revoked 1991 | C 05 | | |
| Mid American Truck Lines Inc | Kansas City | MO | 88864 | MC-005888 | Revoked 1981 | C 01 | | |
| Mid Central Carriers Inc | Cullman | AL | 318503 | MC-220487 | Revoked 2020 | C 01 | | |
| Mid Century Transport Corp | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid Century Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid Coast Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid Continental Bulk Systems Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid Continental Tank Lines Inc | Calgary | AB | 228397 | MC-165348 | Revoked 2014 | C 01 | | |
| Mid South Tank Lines II | Wynve | AR | 1921127 | MCC-687804 | Revoked 2015 | C 01 | | |
| Mid South Transport Inc | Memphis | TN | 286319 | MC-168849 | Active | website | C 01 | |
| Mid-Coast Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid-Continent Freight Lines Inc | St. Paul | MN | 0 | MC-108158 | Revoked 1982 | C 01 | | |
| Mid-Continent Freight Lines Inc | St. Paul | MN | 0 | MC-108158 | Revoked 1982 | C 02 | | |
| Mid-Continent Freight Lines Inc | St. Paul | MN | 0 | MC-108158 | Revoked 1982 | C 03 | | |
| Middle American Express | Excelsior Springs | MO | 608803 | MC-00120909 | Revoked 1997 | C 01 | | |
| Middle Atlantic Transportation | New Britain | CT | 0 | MC-044592 | Merged 1971 | C 01 | | |
| Middle Atlantic Transportation | New Britain | CT | 0 | MC-044592 | Merged 1971 | C 02 | | |
| Middle States Motor Freight Inc | Cincinnati | OH | 0 | MC-039300 | Sold 1976 | C 01 | | |
| Middle States Motor Freight Inc | Cincinnati | OH | 0 | MC-039300 | Sold 1976 | M 01 | | |
| Middle States Motor Freight Inc | Cincinnati | OH | 0 | MC-039300 | Sold 1976 | C 02 | | |
| Middleton Transportation Co | Center | TX | 133048 | MC-155205 | Revoked 2013 | C 01 | | |
| Middlewest Freightways Inc | St Louis | MO | 66067 | MC-111651 | Sold 1992 | C 01 | | |
| Middlewest Freightways Inc | St Louis | MO | 66067 | MC-111651 | Sold 1992 | C 02 | | |
| Middlewest Freightways Inc | St Louis | MO | 66067 | MC-111651 | Sold 1992 | C 03 | | |
| Middlewest Freightways Inc | St Louis | MO | 66067 | MC-111651 | Sold 1992 | C 04 | | |
| Midland Delivery Service Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Midland Superior Express Ltd | Calgary | AB | 0 | Unknown | Revoked 1988 | C 01 | | |
| Midland Superior Express Ltd | Calgary | AB | 0 | Unknown | Revoked 1988 | C 02 | | |
| Midland Transport Ltd | Dieppe | NB | 180155 | MC-150430 | Active | website | C 01 | |
| Midland Transport Ltd | Dieppe | NB | 180155 | MC-150430 | Active | website | O 01 | |
| Midland Transport Ltd | Dieppe | NB | 180155 | MC-150430 | Active | website | C 02 | |
| Midland Transport Ltd | Dieppe | NB | 180155 | MC-150430 | Active | website | C 03 | |
| Midland Transportation | Marshalltown | IA | 178184 | MC-135081 | Revoked 2001 | C 01 | | |
| Midland Transportation | Marshalltown | IA | 178184 | MC-135081 | Revoked 2001 | C 02 | | |
| Midland Truck Lines Inc | St Louis | MO | 0 | MC-021227 | Revoked 1976 | C 01 | | |
| Mid-Seven Transportation Co | Des Moines | IA | 87413 | MC-16831 | Not Authorized | C 01 | | |
| Mid-States Express Inc | Aurora | IL | 351407 | MC-218498 | Revoked 2009 | C 01 | | |
| Midway | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Midway Cartage Inc | Chicago | IL | 172180 | MC-120772 | Revoked 2007 | C 01 | | |
| Mid-Way Freight Services | Columbus | OH | 3533210 | NONE | Not Authorized | C 01 | | |
| Midway Transport | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mid-way Transportation Inc | Hewitt | TX | 225063 | MC-155686 | Active | website | C 01 | |
| Mid-way Transportation Inc | Hewitt | TX | 225063 | MC-155686 | Active | website | C 02 | |
| Midwest | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Midwest Coast Transport Inc (MCT) | Sioux Falls | SD | 783 | MC-111812 | Clsd 1988 | C 01 | | |
| Midwest Coast Transport Inc (MCT) | Sioux Falls | SD | 783 | MC-111812 | Clsd 1988 | C 02 | | |
| Midwest Coast Transport Inc (MCT) | Sioux Falls | SD | 783 | MC-111812 | Clsd 1988 | C 03 | | |
| Midwest Coast Transport Inc (MCT) | Sioux Falls | SD | 783 | MC-111812 | Clsd 1988 | C 04 | | |
| Midwest Coast Transport Inc (MCT) | Sioux Falls | SD | 783 | MC-111812 | Clsd 1988 | C 05 | | |
| Midwest Emery Freight System Inc (ME) | Chicago | IL | 76583 | MC-114019 | Revoked 1988 | C 01 | | |
| Midwest Emery Freight System Inc (ME) | Chicago | IL | 76583 | MC-114019 | Revoked 1988 | C 02 | | |
| Midwest Emery Freight System Inc (ME) | Chicago | IL | 76583 | MC-114019 | Revoked 1988 | C 03 | | |
| Midwest Express Group | East Liberty | OH | 2214026 | MC-205212 | Revoked 1999 | C 01 | | |
| Midwest Motor Express Inc (M/M/E) | Bismarck | ND | 35207 | MC-002153 | Active | website | C 01 | |
| Midwest Motor Express Inc (M/M/E) | Bismarck | ND | 35207 | MC-002153 | Active | website | C 02 | |
| Midwest Specialized Transportation | Rochester | MN | 107815 | MC-117068 | Active | C 01 | | |
| Midwest Specialized Transportation | Rochester | MN | 107815 | MC-117068 | Active | C 02 | | |
| Midwest Specialized Transportation | Rochester | MN | 107815 | MC-117068 | Active | C 03 | | |
| Midwest Specialized Transportation | Rochester | MN | 107815 | MC-117068 | Active | C 04 | | |
| Midwest Specialized Transportation | Rochester | MN | 107815 | MC-117068 | Active | C 05 | | |
| Midwest Transfer Co | Rochester | MN | 107815 | MC-117068 | Active | C 01 | | |
| Midwestern Cartage Co | Emporia | KS | 0 | Unknown | Unknown | C 01 | | |
| Midwestern Distribution Inc | Fort Scott | KS | 144073 | MC-128273 | Revoked 1999 | C 01 | | |
| Midwestern Distribution Inc | Fort Scott | KS | 144073 | MC-128273 | Revoked 1999 | C 02 | | |
| Mike Aldridge Trucking Inc | Newland | NC | 268919 | MC-179554 | Revoked 2011 | C 01 | | |
| Mike Katdchman Trucking | Unknown | XX | 0 | Unknown | Unknown | H 01 | | |
| Mike Lowrie Trucking | Dixon | CA | 351560 | MC-302104 | IR 1997 | C 01 | | |
| Mike Vail Trucking Ltd | Calgary | AB | 0 | Unknown | Unknown | H 01 | | |
| Milan Express Co Inc | Jackson | TN | 96609 | MC-121649 | Active | C 01 | | |
| Milan Express Co Inc | Jackson | TN | 96609 | MC-121649 | Active | C 02 | | |
| Milky-Way Transport Co | Springfield | MO | 251548 | 177705 | Revoked 2019 | C 01 | | |
| Mill Creek Motor Freight | Ayr | ON | 2244870 | MC-685846 | Active | website | C 01 | |
| Mill Motor Service | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Miller & Miller Motor Freight Lines | Wichita Falls | TX | 0 | MC-077452 | Revoked 1960 | C 01 | | |
| Miller & Overton Trucking Inc | Matoon | IL | 983858 | MC-215739 | Active | H 01 | | |
| Miller Bros Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Miller Motor Express | Charlotte | NC | 0 | MC-075339 | Sold 1964 | C 01 | | |
| Miller Oilfield Hauling | Unknown | XX | 0 | Unknown | Unknown | H 01 | | |
| Miller Petroleum Transporters Ltd | Jackson | MS | 0 | Unknown | Unknown | C 01 | | |
| Miller Transportation Inc | Kokomo | IN | 0 | MC-078712 | Not found | C 01 | | |
| Miller Transporters Inc | Jackson | MS | 87844 | MC-107002 | Active | website | C 01 | |
| Miller Truck Lines Inc | Stroud | OK | 0 | MC-139926 | N 2009 | C 01 | | |
| Miller Truck Lines Inc | Stroud | OK | 0 | MC-139926 | N 2009 | C 02 | | |
| Miller Truck Lines Inc | Stroud | OK | 0 | MC-139926 | N 2009 | C 03 | | |
| Miller Truck Lines Inc | Stroud | OK | 0 | MC-139926 | N 2009 | A 30 | | |
| Miller Trucking | Grande Prairie | XX | 0 | Unknown | Unknown | C 01 | | |
| Miller Trucking | Grande Prairie | XX | 0 | Unknown | Unknown | H 02 | | |
| Miller Trucking Co Inc | Spencer | WV | 0 | MC-163670 | IR 1988 | C 01 | | |
| Miller's Motor Freight Inc | York | PA | 10661 | MC-041915 | Revoked 1987 | C 01 | | |
| Millis Transfer Inc | Black River Falls | WI | 46749 | MC-111310 | Active | website | C 01 | |
| Mills Transportation Inc | Dover | DE | 279515 | MC-150703 | Revoked 2005 | C 01 | | |
| Mills Transportation Inc | Dover | DE | 279515 | MC-150703 | Revoked 2005 | C 02 | | |
| Millstead Van Lines Inc | Batesville | OK | 34292 | MC-037203 | Not Authorized | C 01 | | |
| Milltown Trucking | Oak Bay | NB | 172209 | MC-204422 | Active | website | C 01 | |
| Milne Truck Lines Inc | Salt Lake City | UT | 4588 | MC-044605 | Clsd 1987 | C 01 | | |
| Milne Truck Lines Inc | Salt Lake City | UT | 4588 | MC-044605 | Clsd 1987 | O 01 | | |
| Milne Truck Lines Inc | Salt Lake City | UT | 4588 | MC-044605 | Clsd 1987 | C 02 | | |
| Milne Truck Lines Inc | Salt Lake City | UT | 4588 | MC-044605 | Clsd 1987 | C 03 | | |
| Milne Truck Lines Inc | Salt Lake City | UT | 4588 | MC-044605 | Clsd 1987 | C 04 | | |
| Milne Truck Lines Inc | Salt Lake City | UT | 4588 | MC-044605 | Clsd 1987 | C 05 | | |
| Milner | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Milo Express Inc | Oakmont | PA | 248410 | MC-176472 | Revoked 2013 | C 01 | | |
| Milton Transportation Inc | Milton | PA | 10666 | MC-136343 | Active | website | C 01 | |
| Milton Transportation Inc | Milton | PA | 10666 | MC-136343 | Active | website | C 02 | |
| Milton Transportation Inc | Milton | PA | 10666 | MC-136343 | Active | website | C 03 | |
| Milwaukee Motor Transportation Co | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mindemann Trucking Inc | Ixonia | WI | 169168 | MC-119343 | T 1980 | C 01 | | |
| Mindemann Trucking Inc | Ixonia | WI | 169168 | MC-119343 | T 1980 | C 02 | | |
| Minnesota Express Inc | Willmar | MN | 107843 | MC-154794 | Revoked 2001 | C 01 | | |
| Minnesota Motor Co | Fergus Falls | MN | 1154940 | NONE | Not Authorized | C 01 | | |
| Minnesota Wisconsin Truck Lines | St Paul | MN | 0 | MC-119914 | Merged 1981 | C 01 | | |
| Minnesota Wisconsin Truck Lines | St Paul | MN | 0 | MC-119914 | Merged 1981 | C 02 | | |
| Minnesota Wisconsin Truck Lines | St Paul | MN | 0 | MC-119914 | Merged 1981 | C 03 | | |
| Minnesota Wisconsin Truck Lines | St Paul | MN | 0 | MC-119914 | Merged 1981 | C 04 | | |
| Mission Companies | Houston | TX | 232937 | MC-157880 | Active | website | O 00 | |
| Mission Petroleum Carriers Inc | Houston | TX | 232937 | MC-157880 | Active | website | C 01 | |
| Mission Petroleum Carriers Inc | Houston | TX | 232937 | MC-157880 | Active | website | C 02 | |
| Mission Petroleum Carriers Inc | Houston | TX | 232937 | MC-157880 | Active | website | C 03 | |
| Mission Steel Carriers Inc | Houston | TX | 136480 | MC-121633 | Revoked 2009 | C 01 | | |
| Mississippi Fast Freight Co | Jackson | MS | 288091 | MC-190368 | Revoked 2005 | C 01 | | |
| Mississippi Transport Inc | Stillwater | MN | 211886 | MC-161945 | Revoked 2006 | C 01 | | |
| Mississippi Transport Inc | Stillwater | MN | 211886 | MC-161945 | Revoked 2006 | C 02 | | |
| Missouri Nebraska Express Inc | St Joseph | MO | 89350 | MC-022509 | Revoked 1995 | C 01 | | |
| Missouri Pacific Truck Lines Inc | St Louis | MO | 66084 | MC-089723 | Revoked 2008 | C 01 | | |
| Missouri Pacific Truck Lines Inc | St Louis | MO | 66084 | MC-089723 | Revoked 2008 | C 03 | | |
| Missouri Pacific Truck Lines Inc | St Louis | MO | 66084 | MC-089723 | Revoked 2008 | C 04 | | |
| Missouri Pacific Truck Lines Inc | St Louis | MO | 66084 | MC-089723 | Revoked 2008 | C 05 | | |
| Missouri Pacific Truck Lines Inc | St Louis | MO | 66084 | MC-089723 | Revoked 2008 | C 06 | | |
| Mister P Express Inc | Jeffersonville | IN | 353992 | MC-211407 | Active | website | C 01 | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 01 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 02 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 03 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 04 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 05 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 07 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 08 | | |
| Mistletoe Express Service | Oklahoma City | OK | 34293 | MC-042405 | Revoked 1982 | C 09 | | |
| Mitchell Transport Inc | Hamilton | ON | 0 | Unknown | Unknown | C 01 | | |
| Mitchell Transport Inc | Hamilton | ON | 0 | Unknown | Unknown | S 05 | | |
| MLS Ryder | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| MMS Ryan Does Trucking Inc | Springfield | OH | 295681 | MC-180221 | Active | website | C 01 | |
| MNX | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Moberg Transport Inc | Marshall | MN | 153691 | MC-142229 | Revoked 2022 | C 01 | | |
| Modern Motor Express Inc | Cleveland | OH | 153473 | MC-58116 | Inactive | C 01 | | |
| Modern Motor Express Inc | Cleveland | OH | 153473 | MC-58116 | Inactive | C 02 | | |
| Modern Transportation Services Inc | Sewickley | PA | 290790 | MC-200334 | Active | website | C 01 | |
| Modern Transportation Services Inc | Sewickley | PA | 290790 | MC-200334 | Active | website | C 02 | |
| Moeller Brothers Inc | Nashville | IL | 211917 | MC-309940 | Active | C 01 | | |
| Moffat Express Freight | Wellston | OH | 0 | Unknown | Unknown | C 01 | | |
| Mohawk Motor Inc | Tiffen | OH | 0 | MC-019778 | Unknown | C 01 | | |
| Mokan Container Services Inc | Kansas City | KS | 319584 | MC-189167 | Revoked 2016 | C 01 | | |
| Mokan Container Services Inc | Kansas City | KS | 319584 | MC-189167 | Revoked 2016 | C 02 | | |
| Molerway Freight Lines | Billings | MT | 30134 | MC-135621 | Revoked 2005 | C 01 | | |
| Momentum | Unknown | XX | 0 | Unknown | Unknown | ? 01 | | |
| Momsen Trucking Co | Omaha | NE | 72253 | MC-124174 | Revoked 1987 | C 01 | | |
| Monarch Transport Ltd | Acheson | AB | 709728 | MC-327651 | Active | website | C 01 | |
| Moncton Transit Ltd | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Monette & Freres Transport | Toronto | ON | 0 | Unknown | Unknown | C 01 | | |
| Monfort Transportation Co | Greely | CO | 154240 | MC-144572 | Revoked 2004 | C 01 | | |
| Monkem Co Inc | Joplin | MO | 69672 | MC-119493 | Revoked 1991 | O 01 | | |
| Monkem Co Inc | Joplin | MO | 69672 | MC-119493 | Revoked 1991 | O 01 | | |
| Monkem Co Inc | Joplin | MO | 69672 | MC-119493 | Revoked 1991 | C 02 | | |
| Monkem Co Inc | Joplin | MO | 69672 | MC-119493 | Revoked 1991 | C 03 | | |
| Monkem Co Inc | Joplin | MO | 69672 | MC-119493 | Revoked 1991 | C 04 | | |
| Monkem Co Inc | Joplin | MO | 69672 | MC-119493 | Revoked 1991 | C 05 | | |
| Monson Trucking Inc | Duluth | MN | 107865 | MC-004483 | Revoked 2009 | C 01 | | |
| Montana Express | Unknown | XX | 0 | Unknown | Unknown | H 01 | | |
| Montgomery Contract Carrier | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Montgomery Tank Lines Inc | Plant City | FL | 76600 | MC-127840 | Revoked 1989 | C 01 | | |
| Montgomery Trucking | Plant City | FL | 76600 | MC-127840 | Revoked 1989 | C 01 | | |
| Montgomery Trucking Co | Wellston | OH | 93019 | MC-141791 | Active | H 02 | | |
| Montreal Ottawa Express Ltd | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Moon Freight Lines | Bloomington | IN | 0 | MC-016903 | Revoked 1995 | C 01 | | |
| Moon Freight Lines | Bloomington | IN | 0 | MC-016903 | Revoked 1995 | RC 02 | | |
| Moores | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Moore's Trucking Co | Piscataway | NJ | 25487 | MC-077479 | Revoked 1996 | C 01 | | |
| Moore's Trucking Co | Piscataway | NJ | 25487 | MC-077479 | Revoked 1996 | C 01 | | |
| Moore's Trucking Co | Piscataway | NJ | 25487 | MC-077479 | Revoked 1996 | C 02 | | |
| Moore's Trucking Co | Piscataway | NJ | 25487 | MC-077479 | Revoked 1996 | C 03 | | |
| Moran Transportation Group | Elk Grove Village | IL | 306413 | MC-214625 | Active | website | C 01 | |
| Moran Transportation Group | Elk Grove Village | IL | 306413 | MC-214625 | Active | website | C 02 | |
| Moreno's Trucking Service | San Antonio | TX | 0 | Unknown | Unknown | C 01 | | |
| Morey Transport Inc | San Carlos | CA | 2713701 | None | Not Authorized | C 01 | | |
| Morgan Drive Away Inc | Elkhart | IN | 70863 | MC-103993 | Revoked 2002 | C 01 | | |
| Morgan Drive Away Inc | Elkhart | IN | 70863 | MC-103993 | Revoked 2002 | C 03 | | |
| Morgan Drive Away Inc | Elkhart | IN | 70863 | MC-103993 | Revoked 2002 | C 04 | | |
| Morgan Mistletoe Express | Dallas | TX | 34293 | MC-42405 | Revoked 1989 | C 01 | | |
| Morgan Mistletoe Express | Dallas | TX | 34293 | MC-42405 | Revoked 1989 | C 02 | | |
| Morgan Service | Unknown | XX | 0 | Unknown | Unknown | C 02 | | |
| Morgan Transportation Corp | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Morneau Transport | Levis | QB | 0 | Unknown | Unknown | C 01 | | |
| Morneau Transport | Levis | QB | 0 | Unknown | Unknown | C 02 | | |
| Morral Transportation Inc | Morral | OH | 314213 | MC-209420 | Active | C 01 | | |
| Morrell Transfer | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Morris Cartage | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Morrison Motor Freight Inc | Akron | OH | 71789 | MC-059728 | FF<1980 | C 01 | | |
| Morrison Motor Freight Inc | Akron | OH | 71789 | MC-059728 | FF<1980 | C 02 | | |
| Morton Motor Express Inc | Greenboro | NC | 660955 | MC-309604 | Active | website | C 01 | |
| Moschino Trucking | Coello | IL | 388595 | NONE | Unknown | C 01 | | |
| Moss Trucking Co Inc | Charlotte | NC | 97169 | MC-108341 | Revoked 1997 | C 01 | | |
| Moss Trucking Co Inc | Charlotte | NC | 97169 | MC-108341 | Revoked 1997 | C 02 | | |
| Motor Cargo Inc | Akron | OH | 0 | MC-074721 | Sold 1960 | C 01 | | |
| Motor Cargo Inc | Akron | OH | 0 | MC-074721 | Sold 1960 | C 02 | | |
| Motor Cargo Inc | Akron | OH | 0 | MC-074721 | Sold 1960 | C 03 | | |
| Motor Cargo Inc | Akron | OH | 0 | MC-074721 | Sold 1960 | C 04 | | |
| Motor Cargo Inc | Akron | OH | 0 | MC-074721 | Sold 1960 | C 05 | | |
| Motor Cargo Industries Inc | Salt Lake City | UT | 4552 | MC-114818 | Revoked 2006 | C 01 | | |
| Motor Cargo Industries Inc | Salt Lake City | UT | 4552 | MC-114818 | Revoked 2006 | C 03 | | |
| Motor Cargo Industries Inc | Salt Lake City | UT | 4552 | MC-114818 | Revoked 2006 | C 04 | | |
| Motor Cargo Industries Inc | Salt Lake City | UT | 4552 | MC-114818 | Revoked 2006 | C 05 | | |
| Motor Cargo Industries Inc | Salt Lake City | UT | 4552 | MC-114818 | Revoked 2006 | C 06 | | |
| Motor Cargo Industries Inc | Salt Lake City | UT | 4552 | MC-114818 | Revoked 2006 | C 07 | | |
| Motor Carriers Ltd | Oshawa | ON | 0 | Unknown | T 1988 | C 01 | | |
| Motor Convoy Inc | Atlanta | GA | 153114 | MC-003581 | Revoked 1994 | C 01 | | |
| Motor Convoy Inc | Atlanta | GA | 153114 | MC-003581 | Revoked 1994 | C 02 | | |
| Motor Convoy Inc | Atlanta | GA | 153114 | MC-003581 | Revoked 1994 | C 03 | | |
| Motor Convoy Inc | Atlanta | GA | 153114 | MC-003581 | Revoked 1994 | C 04 | | |
| Motor Express of Indiana | Indianapolis | IN | 70860 | MC-028813 | Clsd 1992 | C 01 | | |
| Motor Freight Corp | Terre Haute | IN | 39614 | MC-002401 | R<1980 | C 01 | | |
| Motor Freight Corp | Terre Haute | IN | 39614 | MC-002401 | R<1980 | O 01 | | |
| Motor Freight Express Inc (MFX) | York | PA | 10663 | MC-059957 | Clsd 1982 | C 01 | | |
| Motor Freight Express Inc (MFX) | York | PA | 10663 | MC-059957 | Clsd 1982 | C 02 | | |
| Motor Freight Express Inc (MFX) | York | PA | 10663 | MC-059957 | Clsd 1982 | C 03 | | |
| Motor Freight Express Inc (MFX) | York | PA | 10663 | MC-059957 | Clsd 1982 | A 115 | | |
| Motor Service Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motor Transport | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motor Transport Co | Milwaukee | WI | 0 | MC-072285 | Revoked 1979 | C 01 | | |
| Motor Transport Co | Milwaukee | WI | 0 | MC-072285 | Revoked 1979 | C 02 | | |
| Motor Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motor Transportation Co Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motor Transportation Services | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motoring Service Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 01 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | O 01 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 02 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 03 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 03 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 04 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 05 | | |
| Motorways (Ontario) Ltd | Toronto | ON | 36267 | MC-110948 | Clsd 1993 | C 06 | | |
| Motorways Direct | Winnipeg | MB | 36267 | MC-110948 | Revoked 2009 | C 01 | | |
| Motorways Motospan | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Motrux Inc | Delta Bay | BC | 192818 | MC-154912 | Active | C 01 | | |
| Mouland Express Inc | Ottawa | ON | 0 | Unknown | Unknown | C 01 | | |
| Mouland Fast Freight | Ottawa | ON | 0 | Unknown | Unknown | C 01 | | |
| Mount Vernon Transportation | Maudlin | SC | 0 | Unknown | Unknown | C 01 | | |
| Mountain River Trucking Co Inc | Mount Airy | NC | 277392 | MC-194278 | Active | website | C 01 | |
| Mountain River Trucking Co Inc | Mount Airy | NC | 277392 | MC-194278 | Active | website | C 02 | |
| Mountain States Transport | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mountain Valley Express Co Inc | Manteca | CA | 172279 | MC-147640 | Active | website | C 01 | |
| Mountain Valley Express Co Inc | Manteca | CA | 172279 | MC-147640 | Active | website | C 02 | |
| Mountaineer Bulk Services Inc | Ellenboro | WV | 291847 | MC-193342 | Revoked 2002 | C 01 | | |
| Mouw Transportation Inc | Sibley | IA | 65960 | MC-138621 | Revoked 2022 | C 01 | | |
| Mowat Express | Dudas | ON | 0 | Unknown | Revoked 1996 | C 01 | | |
| Mowat Express | Dudas | ON | 0 | Unknown | Revoked 1996 | C 02 | | |
| Mowat Express | Dudas | ON | 0 | Unknown | Revoked 1996 | C 03 | | |
| Moyer Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mrazek Moving Storage Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| MS | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mt Pleasant Transfer Inc | Mt Pleasant | TN | 154197 | MC-71772 | Active | website | C 01 | |
| MTI Freight Systems Inc | Kennesaw | GA | 0 | Unknown | Unknown | C 01 | | |
| MTL | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Muirhead Forwarding Ltd | Unknown | NL | 0 | Unknown | Unknown | C 01 | | |
| Muirhead Trucking Inc | Mabank | TX | 224017 | MC-211751 | Active | website | C 01 | |
| Muir's Cartage Ltd | Scarborough | ON | 308686 | MC-219656 | Revoked 2010 | C 01 | | |
| Muir's Cartage Ltd | Scarborough | ON | 308686 | MC-219656 | Revoked 2010 | C 02 | | |
| Mukluk Freight Lines Inc | Anchorage | AK | 125088 | MC-118518 | Active | C 01 | | |
| Mullen Trucking Inc | Aldersyde | AB | 158799 | MC-144953 | Active | website | C 03 | |
| Mullen Trucking Ltd | Aldersyde | AB | 158799 | MC-144953 | Active | website | C 01 | |
| Mullen Trucking Ltd | Aldersyde | AB | 158799 | MC-144953 | Active | website | C 04 | |
| Mullen Trucking Ltd | Aldersyde | AB | 158799 | MC-144953 | Active | website | C 05 | |
| Mullen Trucking Ltd | Aldersyde | AB | 158799 | MC-144953 | Active | website | C 06 | |
| Mullen Trucking Ltd | Aldersyde | AB | 158799 | MC-144953 | Active | website | C 07 | |
| Mulligan Trucking | Bon Accord | AB | 0 | Unknown | Unknown | C 01 | | |
| Mumma Freight Lines | Harrisburg | PA | 172287 | MC-146015 | Inactive | C 01 | | |
| Mumma Trucking | Saco | MT | 2011488 | MC-723394 | Not Authorized | C 01 | | |
| Mundy Motor Lines | Roanoke | VA | 0 | MC-3474 | Sold 1961 | C 01 | | |
| Munson Transportation | Monmouth | IL | 76608 | MC-135410 | Revoked 1996 | C 01 | | |
| Munson Transportation | Monmouth | IL | 76608 | MC-135410 | Revoked 1996 | C 02 | | |
| Munson Transportation | Monmouth | IL | 76608 | MC-135410 | Revoked 1996 | C 03 | | |
| Mural Transport Inc | North Brunswick | NJ | 25500 | MC-016682 | Revoked 1995 | C 01 | | |
| Murphy & Hinnarnt Trucking & Garage | Snow Hill | NC | 0 | Unknown | Unknown | C 01 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 01 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | O 01 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 02 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 03 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 04 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 05 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 06 | | |
| Murphy Motor Freight Lines Inc | St. Paul | MN | 107892 | MC-108937 | Clsd 1987 | C 08 | | |
| Murphy Terminal | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Murphy's Express Cargo Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Murray's Transfer & Storage Inc | Davenport | IA | 55677 | MC-138446 | Revoked 2015 | C 01 | | |
| Murrow's Transfer Inc | Thomasville | NC | 90840 | MC-111936 | Active | website | C 01 | |
| Murrow's Transfer Inc | Thomasville | NC | 90840 | MC-111936 | Active | website | C 02 | |
| Murrow's Transfer Inc | Thomasville | NC | 90840 | MC-111936 | Active | website | C 03 | |
| Mushroom Transportation Co Inc | Philadelphia | PA | 113555 | MC-065580 | Clsd 1986 | C 01 | | |
| Muskego Transport Inc | Brookfield | WI | 0 | Unknown | Unknown | C 01 | | |
| Muskoka Transport | Bracebridge | ON | 269180 | MC-181053 | Revoked 2016 | C 01 | | |
| Mustang Transportation Inc | Forney | TX | 0 | Unknown | Unknown | C 01 | | |
| Musty's Transport | Forney | TX | 0 | Unknown | Unknown | C 01 | | |
| Mutual Mile Express | Carlisle | PA | 472612 | MC-250693 | Revoked 1993 | CH 01 | | |
| Mutual Oil Co., Inc | Unknown | XX | 0 | Unknown | Unknown | X 01 | | |
| MWK Transport | Brooklyn | NY | 504925 | MC-257909 | Active | C 02 | | |
| Myers Trucking | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Myers Trucking | Unknown | XX | 0 | Unknown | Unknown | C 02 | | |
| Mystic Bulk Carriers | Matawan | NJ | 0 | Unknown | Unknown | C 02 | | |
| Mystic Bulk Inc | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mystic Tank Lines | Unknown | XX | 0 | Unknown | Unknown | C 03 | | |
| Mystic Transportation | Unknown | XX | 0 | Unknown | Unknown | C 01 | | |
| Mystic Transporters | Astoria | NY | 127360 | MC-445365 | R<1980 | C 01 | | |
| Ormes Mayflower Van Lines | Unknown | XX | 0 | Unknown | Unknown | O 11 | |