| 1 | CMG | Comet Airlines Limited | Callsign: Sunspy, | WAN | AVCODES |
| 2 | CMG | Comet Airlines | | | ICAO1 |
| 3 | CMG | CHICAGO MILWAUKEE & GARY | | | PWRC |
| 4 | CMG | Chicago, Milwaukee and Gary Railway | | | RSRV |
| 5 | CMGA | COMMERCE MOVING & STORAGE INC | | | SCAC3 |
| 6 | CMGA | COMMERCE MOVING & STORAGE INC | | | SCAC4 |
| 7 | CMGC | COMPUTER MOVING CO, THE | | | SCAC3 |
| 8 | CMGC | CAMBRIDGE RIGGING CENTRAL LIMITED | | | SCAC4 |
| 9 | CMGD | CHEVALLEY MOVING & STORAGE OF DEWEY | | | SCAC3 |
| 10 | CMGE | CORD MESSENGER SERVICE | | | SCAC3 |
| 11 | CMGE | CUSTOM AG SERVICES | | | SCAC4 |
| 12 | CMGG | CORE MESSENGER SERVICE INC | | | SCAC3 |
| 13 | CMGG | CAM LOGISTICS LLC | | | SCAC4 |
| 14 | CMGH | CHAPARRAL MOVING & STORAGE | | | SCAC3 |
| 15 | CMGI | COLEY MOVING & STORAGE INC | | | SCAC3 |
| 16 | CMGJ | CM TRUCKING | | | SCAC4 |
| 17 | CMGK | CUMMINGS TRUCKING | | | SCAC3 |
| 18 | CMGK | CAMIONNAGE GILLES LEVECK ENR | | | SCAC4 |
| 19 | CMGL | CRAMERS GAS & OIL INC | | | SCAC4 |
| 20 | CMGM | COLLIER MOVING & STORAGE INC | | | SCAC3 |
| 21 | CMGM | CERDA MUNOZ, GUILLERMO | | | SCAC4 |
| 22 | CMGN | Central Michigan Ry. Co. | added 1/1988; 1/1994-7/2000; eliminated 4/2004; 7/2005 | | NAKINA |
| 23 | CMGN | Central Michigan Ry. Co. | added 1/88; 1/94-7/2000 | | NRHS |
| 24 | CMGN | CENTRAL MICHIGAN RAILWAY CO. | | | PWRC |
| 25 | CMGN | Central Michigan Railway | | | RSRV |
| 26 | CMGN | CENTRAL MICHIGAN RAILWAY CO | | | SCAC3 |
| 27 | CMGN | CENTRAL MICHIGAN RAILWAY CO | | | SCAC4 |
| 28 | CMGN | Central Michigan Ry. Co. | | USA | TRAFFIC |
| 29 | CMGO | CONTINENTAL MOVING SYSTEMS INC | | | SCAC3 |
| 30 | CMGO | C M G TRANSPORTATION | | | SCAC4 |
| 31 | CMGP | CHRISTINA MOVING & STORAGE INC | | | SCAC3 |
| 32 | CMGP | CAMPBELL, GEORGE & SONS INC | | | SCAC4 |
| 33 | CMGQ | C & M TRANSFER | | | SCAC3 |
| 34 | CMGR | CORMAC GRAIN INC | | | SCAC3 |
| 35 | CMGR | CAMLANE GROUP INC, THE | | | SCAC4 |
| 36 | CMGS | COLLINS MOVING SYSTEMS INC | | | SCAC3 |
| 37 | CMGS | CMT UNLIMITED | | | SCAC4 |
| 38 | CMGT | C-MAC CARTAGE INC | | | SCAC3 |
| 39 | CMGU | CEMENGAL SA | | E | BIC |
| 40 | CMGU | CARBUROS MESSER GRIESHEIM SPAIN | | | SCAC3 |
| 41 | CMGU | CARBUROS M | | | SCAC4 |
| 42 | CMGV | CAMBLI INTERNATIONAL INC | | | SCAC4 |
| 43 | CMGW | CANADA MESSENGER TRANSPORTATION SYS | | | SCAC3 |
| 44 | CMGW | CRUMLEY, MITCH GRADING | | | SCAC4 |
| 45 | CMGX | Cities Service Co., Minerals Group | added 4/1979; 1/1980; eliminated 7/1983 | | NAKINA |
| 46 | CMGX | Cities Service Co. | added 1/1971; 1/1975; eliminated 4/1979 | | NAKINA |
| 47 | CMGX | Cities Service Co. | added 1/71; 1/75; eliminated 4/79 | | NRHS |
| 48 | CMGX | Cities Service Co., Minerals Group | added 4/79; 1/80 | | NRHS |
| 49 | CMGX | CITIES SERVICE CO. MINERALS GROUP | | | PWRC |
| 50 | CMGY | CONCEPT MUSCLE CARS LTD | | | SCAC4 |
