| 1 | TRO | Tropic Airlines-Air Molokai | Callsign: Molokai, | USA | AVCODES |
| 2 | TRO | Tropic Airlines-Air Molokai | | | ICAO1 |
| 3 | TROB | TROY FREIGHT EXPEDITING LLC | | | SCAC4 |
| 4 | TROC | TROPICAL SELECTIONS INC | | | SCAC4 |
| 5 | TROCK | Transport of Rockland | Real: TOR | USA | TRAFFIC |
| 6 | TROG | TRANS-UNITED BROKERAGE INC | | | SCAC4 |
| 7 | TROH | TRANSPORTES 100 SILVA | | | SCAC4 |
| 8 | TROI | T R S 2000 | | | SCAC4 |
| 9 | TROK | T ROY TRUCKING INC | | | SCAC4 |
| 10 | TROL | TRANSPORT ROGER OUELLET | | | SCAC4 |
| 11 | TROL | TRANSPOL Sp. z o.o. | | PL | VKM |
| 12 | TRON | TR TRANSPORTATION INC | | | SCAC4 |
| 13 | TRON | | | N | TRAFFIC |
| 14 | TROP | TRIO TRANSPORT SYSTEMS INC | | | SCAC4 |
| 15 | TROQ | TRANSPORTES ROQUIT | | | SCAC4 |
| 16 | TROT | TRANSPORT ROLLEX LTEE | | | SCAC4 |
| 17 | TROU | FELIX TROLL TRANSPORT GMBH | | A | BIC |
| 18 | TROU | TRANS OCEAN LTD. | | | PWRC |
| 19 | TROU | Trans Ocean Limited | | | RSRV |
| 20 | TROU | TRITON OVERSEES | | | SCAC1 |
| 21 | TROU | TRACO HANDELS-UND BERATUNGS GMBH | | | SCAC4 |
| 22 | TROV | TRANSPORT ROVIMAX ENR | | | SCAC4 |
| 23 | TROX | Transcontinental Oil Co. | 8/1920-7/1930 | | NAKINA |
| 24 | TROX | Trojan Recycling Inc. | added 4/2003; 7/2005 | | NAKINA |
| 25 | TROX | *TRANSCONTINENTAL OIL CO. | | | PWRC |
| 26 | TROX | +TROJAN RECYCLING INC. | | | PWRC |
| 27 | TROX | Transcontinental Oil Co. | | USA | TRAFFIC |
| 28 | TROY | TROY HUMPHREY MOVING AND STORAGE INC. | | | SCAC1 |
| 29 | TROY | TROY HUMPHREY MOVING & STORAGE INC | | | SCAC4 |
