| 1 | CAQ | Cityair (Chester) Limited | Callsign: Air Chester, Ceased operations. | GB | AVCODES |
| 2 | CAQ | TOO Cerium Air | Callsign: Qazaq Eagle, | KZ | AVCODES |
| 3 | CAQ | Cityair (Chester) Limited | | | ICAO1 |
| 4 | CAQA | CAN-AM CONTAINERS | | | SCAC3 |
| 5 | CAQB | CAR CARRIER INC. | | | SCAC3 |
| 6 | CAQC | CANAL CARTAGE CO | | | SCAC3 |
| 7 | CAQC | CANAL CARTAGE CO | | | SCAC4 |
| 8 | CAQD | CANTANA TRANSPORT LTD | | | SCAC3 |
| 9 | CAQD | CANTANA TRANSPORT LTD | | | SCAC4 |
| 10 | CAQE | CATHCART AIRPORT EXPRESS LTD | | | SCAC3 |
| 11 | CAQE | COMPANIA AGROPECUARIA LA ESPERANZA | | | SCAC4 |
| 12 | CAQG | CUSTOM AIR CARGO | | | SCAC3 |
| 13 | CAQH | CLASSIC COACH INC | | | SCAC3 |
| 14 | CAQH | CENTURION AUTO LOGISITCS INC | | | SCAC4 |
| 15 | CAQK | CATCO TRUCKING | | | SCAC3 |
| 16 | CAQK | CONTINENTAL ASPHALT LOGISTICS INC | | | SCAC4 |
| 17 | CAQL | CARLEN TRANSPORT INC | | | SCAC3 |
| 18 | CAQL | CARLEN TRANSPORT INC | | | SCAC4 |
| 19 | CAQM | C & A MARINE TRANSPORTATION CO INC, | | | SCAC3 |
| 20 | CAQM | CANO & SONS TRUCKING LLC | | | SCAC4 |
| 21 | CAQN | CARON TRANSPORTATION | | | SCAC3 |
| 22 | CAQN | CANADA ONE AUTO SALES & LEASING | | | SCAC4 |
| 23 | CAQO | CALIFORNIA SHIPPERS ASSOCIATES | | | SCAC3 |
| 24 | CAQP | CENTRAL ARKANSAS PETROLEUM | | | SCAC3 |
| 25 | CAQP | CENTRAL ARKANSAS PETROLEUM TRANSPOR | | | SCAC4 |
| 26 | CAQQ | C & A TRANSPORT CORP | | | SCAC4 |
| 27 | CAQT | CMA TRUCKING | | | SCAC3 |
| 28 | CAQT | COURIER ASSOCIATES INC | | | SCAC4 |
| 29 | CAQW | CAR AMERICA SRL | | | SCAC3 |
