| 1 | CGX | United States Coast Guard Auxiliary | Callsign: Coastguard Auxair, | USA | AVCODES |
| 2 | CGX | United States Coast Guard Auxiliary | | | ICAO1 |
| 3 | CGX | Suburban Gas Ltd. | added 7/1961; eliminated 10/1963 | | NAKINA |
| 4 | CGX | Suburban Gas of Canada, Ltd. | added 4/1961; 4/1961; eliminated 7/1961 | | NAKINA |
| 5 | CGX | Calor Gas Ltd. | added 10/1960; eliminated 4/1961 | | NAKINA |
| 6 | CGX | Calor Gas Co. | 1/1952-10/1957; eliminated 10/1960 | | NAKINA |
| 7 | CGX | Consumers Gas Co. (Consumers Gas Co. of Toronto) | 7/1923 | | NAKINA |
| 8 | CGX | Calor Gas Co. | 1/52-10/57; eliminated 10/60 | | NRHS |
| 9 | CGX | Calor Gas Ltd. | added 10/60; eliminated 4/61 | | NRHS |
| 10 | CGX | Suburban Gas of Canada, Ltd. | added 4/61; 4/61 | | NRHS |
| 11 | CGX | CONSUMERS GAS CO OF TORONTO | | | PWRC |
| 12 | CGX | SUBURBAN GAS LTD OF CANADA {CALOR GAS LTD.] | | | PWRC |
| 13 | CGXA | CARGA EXPRESS CORP | | | SCAC4 |
| 14 | CGXB | COASTAL AG TRANSPORT LLC | | | SCAC4 |
| 15 | CGXD | CHRYSLER GROUP TRANSPORT LLC (CANAD | | | SCAC4 |
| 16 | CGXE | CARGO XPRESS | | | SCAC3 |
| 17 | CGXE | CONSOLIDATED GIROUX ENVIRONMENT INC | | | SCAC4 |
| 18 | CGXI | CARGO EXPEDIATORS INC | | | SCAC3 |
| 19 | CGXJ | CONTAINER CARGO EXPRESS LLC | | | SCAC4 |
| 20 | CGXN | CONESTOGA TRANSPORT LLC | | | SCAC4 |
| 21 | CGXP | CARGO EXPRESS INC | | | SCAC3 |
| 22 | CGXQ | CROSSINGS TRANSPORT SERVICES INC | | | SCAC4 |
| 23 | CGXR | CIRCLE G EXPRESS | | | SCAC3 |
| 24 | CGXT | CARGO TRANSIT CORP | | | SCAC4 |
| 25 | CGXU | CARGOBOX LLC | | RUS | BIC |
| 26 | CGXV | CARGO TRANSPORTATION SERVICES | | | SCAC4 |
