| 1 | CMK | Chernomor-Avia | Callsign: Cheravia, | RUS | AVCODES |
| 2 | CMK | Cosmos Aviation Services (Private) Ltd. | IATA: MO, Callsign: Comos Lanka, | CL | AVCODES |
| 3 | CMK | Chernomor-Avia | | | ICAO1 |
| 4 | CMKA | CMS TRUCKING | | | SCAC3 |
| 5 | CMKA | CARMONA TRUCKING | | | SCAC4 |
| 6 | CMKB | CAMBE TRUCKING INC | | | SCAC4 |
| 7 | CMKC | CONTRACT MARKETING RESOURCES | | | SCAC3 |
| 8 | CMKD | CLERMONT TRUCKING INC | | | SCAC4 |
| 9 | CMKE | CUNNINGHAM, MARK E | | | SCAC3 |
| 10 | CMKG | CEMAK TRUCKING INC | | | SCAC3 |
| 11 | CMKG | CUMMINGS TRUCKING | | | SCAC4 |
| 12 | CMKH | CATES MILK HAULING INC | | | SCAC3 |
| 13 | CMKH | CAMPANALE TRUCKING INC | | | SCAC4 |
| 14 | CMKI | COMTRAK, INC. | | | PWRC |
| 15 | CMKI | COMTRAK INC | | | SCAC3 |
| 16 | CMKI | COMTRAK LOGISTICS INC | | | SCAC4 |
| 17 | CMKJ | CLARK, MIKE & SONS INC | | | SCAC3 |
| 18 | CMKK | CAROLINA MILK CARRIERS INC | | | SCAC3 |
| 19 | CMKK | CEMAK TRUCKING | | | SCAC4 |
| 20 | CMKM | CARMACK MOVING INC | | | SCAC3 |
| 21 | CMKN | COMSTOCK, ROGER D & SONS | | | SCAC3 |
| 22 | CMKO | CARLSON MARKING CO | | | SCAC3 |
| 23 | CMKP | COMMERCIAL PRODUCTS | | | SCAC3 |
| 24 | CMKP | C & M TRUCKING LLC | | | SCAC4 |
| 25 | CMKQ | CONSOLIDATED MILK LINES | | | SCAC3 |
| 26 | CMKR | COMSTOCK TRANSPORTATION INC | | | SCAC3 |
| 27 | CMKR | COMSTOCK TRANSPORTATION INC | | | SCAC4 |
| 28 | CMKS | CHEMICAL MARKETING SERVICES INC | | | SCAC3 |
| 29 | CMKS | ČMKS - Jihlavská lokomotivní společnost s.r.o. | | CZ | VKM |
| 30 | CMKT | COMSTOCK TRUCKING | | | SCAC3 |
| 31 | CMKT | CENTRAL MARKETING TRANSPORT LLC | | | SCAC4 |
| 32 | CMKV | COLONIAL MINUTEMAN | | | SCAC3 |
| 33 | CMKV | CAMPBELL TRUCKING INC | | | SCAC4 |
| 34 | CMKW | CMT | | | SCAC4 |
| 35 | CMKX | Countrymark Cooperative, Inc. | added 1/1993; 1/1994; eliminated 4/1995 | | NAKINA |
| 36 | CMKX | Countrymark Cooperative, Inc. | added 1/93; 1/94; eliminated 4/95 | | NRHS |
| 37 | CMKX | COUNTRYMARK COOPERATIVE, INC. | | | PWRC |
| 38 | CMKX | COUNTRYMARK COOPERATIVE, INC. | | | SCAC4 |
| 39 | CMKY | CUMMINS TRUCKING | | | SCAC3 |
| 40 | CMKY | CAMERON TRUCKING COMPANY INC | | | SCAC4 |
