| 1 | TRU | Triangle Airline (Uganda) Ltd. | Callsign: Tri Air, | EAU | AVCODES |
| 2 | TRU | Triangle Airline (Uganda) | | | ICAO1 |
| 3 | TRUAX | Truax-Traer Coal Co. | | USA | TRAFFIC |
| 4 | TRUB | T R U HOLDINGS INC | | | SCAC4 |
| 5 | TRUC | TRU-DIE LIMITED | | | SCAC4 |
| 6 | TRUD | TRIUS INC | | | SCAC4 |
| 7 | TRUH | TRIUMPH LOGISTICS INC | | | SCAC4 |
| 8 | TRUI | TRANS UNITED INC | | | SCAC4 |
| 9 | TRUL | TRUCKING UNLIMITED | | | SCAC1 |
| 10 | TRUM | TRIUMPH LINK LOGISTICS LTD | | | SCAC4 |
| 11 | TRUN | TEAM RUNNERS LOGISTICS | | | SCAC4 |
| 12 | TRUQ | TRANSPORT RUSH INC | | | SCAC4 |
| 13 | TRUS | TRUST SERVICES INC | | | SCAC4 |
| 14 | TRUST | Trustline | | GB | TRAFFIC |
| 15 | TRUU | TRISTAR ENGINNERING CONSULTING LOGISTIC SA | | CH | BIC |
| 16 | TRUX | Midwest Bottle Gas Co. | added 1/1978; 1/1980-7/2005; eliminated 7/2007 | | NAKINA |
| 17 | TRUX | Midwest Bottle Gas Co. | added 1/78; 1/80-7/2000 | | NRHS |
| 18 | TRUX | MIDWEST BOTTLE GAS COMPANY | | | PWRC |
| 19 | TRUX | Midwest Bottle Gas | | | RSRV |
