| 1 | TII | Aircompany ATI | Callsign: Airati, Ceased operations. | UA | AVCODES |
| 2 | TII | TAISA Transportes Aereos Internacionales S.A. | IATA: TI, Callsign: Taisa, ICAO callsign changed from Tango India | PE | AVCODES |
| 3 | TIID | TRANSPORT IDP INC | | | SCAC4 |
| 4 | TIIO | TETRA INTERMODAL INC | | | SCAC4 |
| 5 | TIIU | TRITON CONTAINER INTERNATIONAL LTD | | BM | BIC |
| 6 | TIIV | TRANS INNOVATION INC | | | SCAC4 |
| 7 | TIIX | Transportex International, Inc. | added 10/1974; 1/1975; eliminated 4/1979 | | NAKINA |
| 8 | TIIX | Transportex International, Inc. | added 10/74; 1/75; eliminated 4/79 | | NRHS |
| 9 | TIIX | *TRANSPORTEX INTERNATIONAL INC. | | | PWRC |
| 10 | TIIX | *TRINITY INDUSTRIES, INC, | | | PWRC |
| 11 | TIIX | TRANSPORTEX INTERNATIONAL INC | | | SCAC4 |
| 12 | TIIY | TRACTO IMPLEMENTOS INCORPORATED | | | SCAC4 |
