| 1 | CML | Commander Air Charter Limited | Callsign: Commandair, | CDN | AVCODES |
| 2 | CML | Community Airlines | Callsign: Community, | EAT | AVCODES |
| 3 | CML | Commander Air Charter | | | ICAO1 |
| 4 | CML | CAPITAL TRAILWAYS | | | SCAC4 |
| 5 | CMLA | COOPER MOTOR LINES, INC | | | SCAC3 |
| 6 | CMLA | CREAMLAND DAIRIES INC | | | SCAC4 |
| 7 | CMLB | C M L FREIGHT SYSTEMS INC | | | SCAC3 |
| 8 | CMLB | CAMPOS ALVARADO, ABRAHAM | | | SCAC4 |
| 9 | CMLC | CONE MILLS CORPORATION | | | SCAC3 |
| 10 | CMLF | CHEMOIL CORPORATION | | | SCAC3 |
| 11 | CMLG | COMMERCIAL LEASING SERVICES | | | SCAC3 |
| 12 | CMLH | CARGO MASTERS LLC | | | SCAC4 |
| 13 | CMLI | CAMBRIDGE-LEE INDUSTRIES INC | | | SCAC3 |
| 14 | CMLI | CIOT MONTREAL INC | | | SCAC4 |
| 15 | CMLJ | COYOTTE MOTOR LINES | | | SCAC3 |
| 16 | CMLJ | CARGILL MEAT LOGISTICS SOLUTIONS IN | | | SCAC4 |
| 17 | CMLK | C MILE TRANSPORT LTD | | | SCAC3 |
| 18 | CMLL | CAMILLO, AL, TRUCKING CO | | | SCAC3 |
| 19 | CMLM | CAROLINA MILLS INC | | | SCAC3 |
| 20 | CMLN | CUMBERLAND TRANSPORT INC | | | SCAC3 |
| 21 | CMLO | CAMPBELL OIL | | | SCAC3 |
| 22 | CMLO | CHILLIWACK MOUNTAIN LOG HOMES LTD | | | SCAC4 |
| 23 | CMLP | CHEMICAL POLLUTION CONTROL INC | | | SCAC3 |
| 24 | CMLR | CRUMPLER CARTAGE CO INC | | | SCAC3 |
| 25 | CMLR | CAMARILLO TRUCKING | | | SCAC4 |
| 26 | CMLR | Campbeltown and Macrihanish Light Railway | The Campbeltown and Macrihanish Light Railway was a 2' 3\" gauge line at the end of the Mull of Kintyre in Scotland. It had its origins as a coal carrier from the pits at Drumlemble to the quays at Campbeltown, but during the era of the Clyde steamers, Campbeltown became a very popular destination for day trippers and the railway capitalised on this by extending itself to Macrihanish offering access to the Atlantic Ocean and the local golf links! Its final length was about 6 miles. The line originally opened for coal traffic in 1877, and for passenger traffic through to Macrihanish in 1906. It then led a relatively prosperous life until after the first world war, but succumbed to the inevitable road transport, closure of the pits and changing holiday patterns in 1931. It was independent throughout its existence. The railway was interesting in that its coaches were enormous for such a small gauge, and that the early coal trains consisted of 2ft 3in gauge transporter wagons carrying 4 small colliery wagons known as "hutches", transversely. | GB | TRAFFIC |
| 27 | CMLS | COLLIER METAL SPECIALTIES INC | | | SCAC4 |
| 28 | CMLU | CONTAINERS MARINE LINES ISBRANDTSEN (DIVISION OF AMERICAN EXPORT) | | | PWRC |
| 29 | CMLU | Containers Marine Lines | | | RSRV |
| 30 | CMLU | CONTAINER MARINE LINES/DIVISION OF | | | SCAC3 |
| 31 | CMLU | CHUNG MYUNG LINERS CO LTD | | | SCAC4 |
| 32 | CMLV | CURTIN MOTOR LIVERY SERVICE INC | | | SCAC3 |
| 33 | CMLW | C & M LOGISTICS INC | | | SCAC4 |
| 34 | CMLX | Craggy Mountain Line, Inc. | 7/2005 (not listed) | | NAKINA |
| 35 | CMLX | The Ruberoid Co. | 7/1935-1/1945 | | NAKINA |
| 36 | CMLX | The Continental Roofing & Manufacturing Co. | 7/1930 | | NAKINA |
| 37 | CMLX | The Ruberoid Co. | Apr-38 | | NRHS |
| 38 | CMLX | *CONTINENTAL ROOFING & MANUFACTURING CO. | | | PWRC |
| 39 | CMLX | *RUBBEROID CO. | | | PWRC |
| 40 | CMLX | +CRAGGY MOUNTAIN LINE, INC. | | | PWRC |
| 41 | CMLX | Craggy Mountain Line | | | RSRV |
| 42 | CMLX | CRAGGY MOUNTAIN LINE INC | | | SCAC4 |
| 43 | CMLY | CM LIMOUSINE SERVICES INC | | | SCAC3 |
| 44 | CMLZ | CONTAINERS MARINE LINES ISBRANDTSEN | | | PWRC |
| 45 | CMLZ | Containers Marine Lines Isbrandtsen | | | RSRV |
| 46 | CMLZ | AMERICAN EXPORT LINES | | | SCAC3 |
| 47 | CMLZ | CONTAINERS MARINE LINES ISBRANDTSEN | | | SCAC4 |
