| 1 | CBS | Columbus Avia | Callsign: Columbus Avia, Name changed to Air Columbus | UA | AVCODES |
| 2 | CBS | Air Columbus | Callsign: Air Columbus, Name changed from Columbus Avia | UA | AVCODES |
| 3 | CBS | Air Columbus | | | ICAO1 |
| 4 | CBSA | COONEY BULK SALES LIMITED | | | SCAC4 |
| 5 | CBSB | CARIBBEAN SHIPPING SERVICES | | | SCAC3 |
| 6 | CBSB | CARRIBEAN SHIPPING SERVICES INC | | | SCAC4 |
| 7 | CBSC | CAROLINA BONDED STORAGE COMPANY | | | SCAC3 |
| 8 | CBSD | COPPER BASIN DISTRIBUTORS INC | | | SCAC3 |
| 9 | CBSE | CARIB SERVICES | | | SCAC3 |
| 10 | CBSE | COVER-ALL BUILDING SYSTEMS INC | | | SCAC4 |
| 11 | CBSG | CALBEST TRUCKING | | | SCAC4 |
| 12 | CBSH | C.B.S. TRUCKING, INC | | | SCAC3 |
| 13 | CBSH | C B S TRUCKING INC | | | SCAC4 |
| 14 | CBSI | CAMPBELL TRUCKING | | | SCAC3 |
| 15 | CBSK | COB SHIPPING CANADA INC, | | | SCAC3 |
| 16 | CBSK | CAL BROS TRUCKING INC | | | SCAC4 |
| 17 | CBSL | COMBS FREIGHT LINES INC | | | SCAC3 |
| 18 | CBSL | CBS LOGISTICS INC | | | SCAC4 |
| 19 | CBSM | CULBERSON TRUCKING LTD | | | SCAC4 |
| 20 | CBSN | C L-B TRANSPORTATION INC | | | SCAC3 |
| 21 | CBSN | CHARTER BUS SERVICE/ KLUG BUS SERVI | | | SCAC4 |
| 22 | CBSO | CHARTER BUS SERVICE | | | SCAC3 |
| 23 | CBSO | CABO SOUNION LIMITED | | | SCAC4 |
| 24 | CBSP | CARIBBEAN SHIPPING SERVICES INC | | | SCAC4 |
| 25 | CBSQ | COLUMBUS TRUCKING INC | | | SCAC4 |
| 26 | CBSR | C B S TRUCKING CO | | | SCAC3 |
| 27 | CBSS | CHANDLER BUS | | | SCAC3 |
| 28 | CBST | C B STEALTH EXPRESS | | | SCAC4 |
| 29 | CBSU | CABOMUNDO SHIPPING LINE | | | SCAC4 |
| 30 | CBSW | CHANG BAI SHAN SHIPPING CO, LTD | | | SCAC3 |
| 31 | CBSX | Cambria Steel Co. (Bethlehem Steel Co.) | 7/1923 | | NAKINA |
| 32 | CBSX | Cambria Steel Co. | 8/1920 | | NAKINA |
| 33 | CBSX | BETHELEHEM STEEL CO. (CAMBRIA STEEL CO.) | | | PWRC |
| 34 | CBSY | CBS | | | SCAC4 |
| 35 | CBSZ | CBSL TRANSPORTATION SERVICES INC | | | SCAC4 |
