| 1 | ICB | Islandsflug HF | IATA: HH, Callsign: Icebird, IATA Prefix: 652, Designator HH recalled by IATA. Merged in Air Atlanta Icelandic. IATA designator changed from HT* | IS | AVCODES |
| 2 | ICB | Islandsflug HF | IATA: HT, Callsign: Icebird, IATA designator changed to HH | IS | AVCODES |
| 3 | ICB | Icebird Airline | | | ICAO1 |
| 4 | ICB | In der City Bus GmbH | City: Frankfurt am Main | D | TRAFFIC |
| 5 | ICBAF | Italian Co-Belligerent Air Force | Real: ACI, Aviazione Cobelligerante Italiana, 1943 - 1945 | I | TRAFFIC |
| 6 | ICBI | INTERNATIONAL COMPUTER BROKERS INC | | | SCAC4 |
| 7 | ICBL | Inter City Lines | | USA | TRAFFIC |
| 8 | ICBT | INTERSTATE FREIGHT SYSTEMS INC | | | SCAC4 |
| 9 | ICBU | INTERNATIONAL CONTAINER POOL PTE LTD | | SGP | BIC |
| 10 | ICBU | INTERNATIONAL CONTAINER POOL PTE LT | | | SCAC4 |
| 11 | ICBUS | IC Bus | | D | TRAFFIC |
| 12 | ICBV | ITIRO CORPORATION BVI | | | SCAC4 |
