| 1 | ICM | Air Inter Cameroon | Callsign: Inter-Cameroon, | CAM | AVCODES |
| 2 | ICM | Air Inter Cameroun | | | ICAO1 |
| 3 | ICMB | ICEMAN BROKERAGE LLC | | | SCAC4 |
| 4 | ICMC | INDEPENDENT COMMON CARRIERS INC | | | SCAC4 |
| 5 | ICMC | Inter-County Motor Coach | | USA | TRAFFIC |
| 6 | ICME | INTERNATIONAL CLASSIC MOTORBIKE RES | | | SCAC4 |
| 7 | ICML | INDUSTRIAL CHROME & MACHINE LTD | | | SCAC4 |
| 8 | ICMS | INTERNATIONAL CARGO MARINE SHIPPING | | | SCAC4 |
| 9 | ICMU | INTEROX AMERICA | | | PWRC |
| 10 | ICMU | Interox America | | | RSRV |
| 11 | ICMU | CONTENEMAR SA | | | SCAC4 |
| 12 | ICMX | Cargill Dry Corn Ingredients Inc. | added 1/2003; 7/2005 | | NAKINA |
| 13 | ICMX | Illinois Cereal Mills, Inc. | added 4/1992; 1/1994-7/2000; eliminated 1/2003 | | NAKINA |
| 14 | ICMX | Illinois Cereal Mills, Inc. | added 4/92; 1/94-7/2000 | | NRHS |
| 15 | ICMX | CARGILL DRY CORN INGREDIENTS, INC. [ILLINOIS CEREAL MILLS] | | | PWRC |
| 16 | ICMX | Illinois Cereal Mills | | | RSRV |
| 17 | ICMX | CARGILL DRY CORN INGREDIENTS INC | | | SCAC4 |
| 18 | ICMZ | INTERNATIONAL MINERAL CHEMICAL | | | PWRC |
