| 1 | CHM | Aero Chombo, S.A. | Callsign: Aerochombo, | MEX | AVCODES |
| 2 | CHM | Chemech Aviation (Pvt) Limited | | PK | AVCODES |
| 3 | CHM | Chemech Aviation | | | ICAO1 |
| 4 | CHMA | CHRIS MACHINE & RIGGING | | | SCAC3 |
| 5 | CHMA | CHAREST, MAURICE | | | SCAC4 |
| 6 | CHMB | C & M HOME HEATING OIL | | | SCAC4 |
| 7 | CHMC | CHB MOVING & CRATING CO | | | SCAC3 |
| 8 | CHMC | CHB MOVING & CRATING CO | | | SCAC4 |
| 9 | CHMD | CHAMPION SHIPPING A S | | | SCAC3 |
| 10 | CHME | CHILLICOTHE MOTOR EXPRESS, INC | | | SCAC3 |
| 11 | CHME | CHICO, M E TRANSPORT INC | | | SCAC4 |
| 12 | CHMF | CHUANG HUI MARINE CO LTD | | | SCAC3 |
| 13 | CHMF | CHAMATI TRUCKING CORP | | | SCAC4 |
| 14 | CHMF | Challenger Motor Freight | | USA | TRAFFIC |
| 15 | CHMG | CHARLESTON MOVING & STORAGE CO INC | | | SCAC3 |
| 16 | CHMGS | CHEMGAS HOLDING CORPORATION SRL | | RO | VKM |
| 17 | CHMH | CMX TRUCKING INC | | | SCAC3 |
| 18 | CHMH | CHEMO TRANSPORT LLC | | | SCAC4 |
| 19 | CHMI | CHIMENTO, P CO INC | | | SCAC3 |
| 20 | CHMI | CHEMCOAT INC | | | SCAC4 |
| 21 | CHMJ | CHICAGO MESSENGER SERVICE INC | | | SCAC3 |
| 22 | CHMJ | CHICAGO MESSENGER SERVICE INC | | | SCAC4 |
| 23 | CHMK | CHAMP,EMIL E | | | SCAC3 |
| 24 | CHMK | CHAMPION TRUCKING INC | | | SCAC4 |
| 25 | CHML | CHARM SHIPPING INC. | | | SCAC3 |
| 26 | CHML | CHROMA LAB | | | SCAC4 |
| 27 | CHMM | CHALMERS MOTOR FREIGHT INC | | | SCAC3 |
| 28 | CHMM | CASHMA | | | SCAC4 |
| 29 | CHMN | CHIPMAN MOVING & STORAGE (SPOKANE) | | | SCAC3 |
| 30 | CHMN | CHIPMAN MOVING & STORAGE (SPOKANE) | | | SCAC4 |
| 31 | CHMO | CHASE MOVING AND STORAGE | | | SCAC3 |
| 32 | CHMO | CHIMO TRANSPORT INC | | | SCAC4 |
| 33 | CHMP | CHAMPION INTERNATIONAL MOVING LTD | | | SCAC3 |
| 34 | CHMQ | CHEM TECK CORPORATION | | | SCAC3 |
| 35 | CHMS | CHAMPION MESSENGER SERVICE | | | SCAC3 |
| 36 | CHMT | COACHMAN TOURS INC | | | SCAC3 |
| 37 | CHMT | Chemtura Organometallics GmbH | | DE | VKM |
| 38 | CHMU | ALBEMARLE GERMANY GMBH | | D | BIC |
| 39 | CHMU | CHEMETALL GMBH | | | SCAC4 |
| 40 | CHMU | Chemetall GmbH | | DE | VKM |
| 41 | CHMUS | Straßenbahnfreunde Chemnitz e.V. | City: Chemnitz, Tramway museum in Chemnitz | D | TRAFFIC |
| 42 | CHMW | CHAMBERLIN, W R & CO | | | SCAC3 |
| 43 | CHMX | First Union Rail | added 4/2001; 7/2005 | | NAKINA |
| 44 | CHMX | Southern Illinois Railcar Co. | added 4/1995; 7/2000; eliminated 4/2001 | | NAKINA |
| 45 | CHMX | Charter Meridian Corp. | 1/1994 (not listed) | | NAKINA |
| 46 | CHMX | C.H. Masland & Sons | added 10/1978; 1/1980; eliminated 1/1986 | | NAKINA |
| 47 | CHMX | C.H. Masland & Sons | added 10/78; 1/80; eliminated 1/86 | | NRHS |
| 48 | CHMX | Charter Meridian Corp. | Jan-94 | | NRHS |
| 49 | CHMX | Southern Illinois Railcar Co. | added 4/95; 7/2000; eliminated 4/2001 | | NRHS |
| 50 | CHMX | First Union Rail | added 4/2001 | | NRHS |
| 51 | CHMX | *CHARTER MERIDIAN CORPORATION | | | PWRC |
| 52 | CHMX | *C. H. MASLAND & SONS | | | PWRC |
| 53 | CHMX | +FIRST UNION RAIL [SOUTHERN ILLINOIS RAILCAR INC] | | | PWRC |
| 54 | CHMX | C. H. Masland and Sons (First Union Rail) | | | RSRV |
| 55 | CHMX | CHARTER MERIDIAN CORPORATION | | | SCAC4 |
| 56 | CHMZ | CHINOOK MINE | | | PWRC |
