| 1 | TSU | Contract Air Cargo, Inc. | Callsign: Trans-Auto, Name changed to Gulf and Caribbean Cargo, Inc. | USA | AVCODES |
| 2 | TSU | Gulf and Caribbean Cargo, Inc. d/b/a IFL Group | IATA: IF, Callsign: Trans-Auto, IATA Prefix: 611, Name changed from Contract Air Cargo, Inc. | USA | AVCODES |
| 3 | TSU | Contract Air Cargo | | | ICAO1 |
| 4 | TSU | Tulsa-Sapulpa Union Ry. Co. | 1/1975-1/1994; eliminated 7/1996 | | NAKINA |
| 5 | TSU | Tulsa-Sapulpa Union Ry. Co., L.L.C. | added 7/1996; 7/2000-7/2005 | | NAKINA |
| 6 | TSU | Tulsa-Sapulpa Union Ry. Co. | 1/75-1/94; eliminated 7/96 | | NRHS |
| 7 | TSU | Tulsa-Sapulpa Union Ry. Co., L.L.C. | added 7/96; 7/2000 | | NRHS |
| 8 | TSU | TULSA-SAPULPA UNION RAILWAY CO., LLC | | | PWRC |
| 9 | TSU | Tulsa-Sapulpa Union Railway | | | RSRV |
| 10 | TSU | TULSA-SAPULPA UNION RAILWAY COMPANY | | | SCAC4 |
| 11 | TSU | Tulsa-Sapulpa Union | | USA | TRAFFIC |
| 12 | TSUB | TOTAL SOLUTION LOGISTICS | | | SCAC4 |
| 13 | TSUF | TRANSPORT SERVICES UNLIMITED OF SHE | | | SCAC4 |
| 14 | TSUG | Tsugaru Railway | | J | TRAFFIC |
| 15 | TSUH | TRIMAC TRANSPORTATION SOUTH INC | | | SCAC4 |
| 16 | TSUI | TRANSPORTES SAN LUIS | | | SCAC4 |
| 17 | TSUJ | TRANSPORT SOLUTIONS | | | SCAC4 |
| 18 | TSUK | TARA TRANSPORT | | | SCAC4 |
| 19 | TSUM | TATSUMI INTERMODAL (U S A) INC | | | SCAC4 |
| 20 | TSUO | TRANSPORT RSN | | | SCAC4 |
| 21 | TSUS | TRANSUS INTERMODAL L L C | | | SCAC4 |
| 22 | TSUT | TECHNICAL SOLUTIONS | | | SCAC4 |
| 23 | TSUV | TORTILLERIA SUPERIOR | | | SCAC4 |
| 24 | TSUX | Tri-State Utility Inc. | 1/1994 (not listed) | | NAKINA |
| 25 | TSUX | Tri-State Utility Inc. | Jan-94 | | NRHS |
| 26 | TSUX | TRI-STATE UTILITY INC. | | | PWRC |
| 27 | TSUY | TRANSUNION AMERICA INC | | | SCAC4 |
