| 1 | TSX | Trans-Asia | Callsign: Trans-Asia, | KZ | AVCODES |
| 2 | TSX | Thai Star Airlines | IATA: T9, Callsign: Thai Star, | T | AVCODES |
| 3 | TSX | Thai Star Airlines | IATA: T9 | | ICAO1 |
| 4 | TSX | Tank Specializing Co. | 4/1947-4/1961 (not listed) | | NAKINA |
| 5 | TSX | Tank Specializing Co. | 1/52-4/61 | | NRHS |
| 6 | TSX | TANK SPECIALIZING CO. | | | PWRC |
| 7 | TSXD | TRANSPORTES SENTRI EXPRESS S DE RL | | | SCAC4 |
| 8 | TSXF | TRANSPORTES REFRIGERADOS SAN CARLOS | | | SCAC4 |
| 9 | TSXG | TRIPLE S TRANSPORTATION INC | | | SCAC4 |
| 10 | TSXH | TSX TRANSPORT INC | | | SCAC4 |
| 11 | TSXK | T S TRANSIT LLC | | | SCAC4 |
| 12 | TSXL | TRANSTAR EXPRESS LLC | | | SCAC4 |
| 13 | TSXN | TSS TRANSPORT INC | | | SCAC4 |
| 14 | TSXO | TRANSX LTD (INTERMODAL DIVISION) | | | SCAC4 |
| 15 | TSXR | THREE S EXPRESS INC | | | SCAC4 |
| 16 | TSXS | TST OLEX (DIVISION OF TST SOLUTIONS | | | SCAC4 |
| 17 | TSXT | TWO SIX TWO EIGHT-SIX ZERO ONE THRE | | | SCAC4 |
| 18 | TSXV | TRI-STONE TRANSPORTATION LLC | | | SCAC4 |
| 19 | TSXW | TRI-STATE EXPRESS, INC | | | SCAC1 |
| 20 | TSXX | Tri-State Generation & Transmission Association, Inc. | 1/1994 (not listed); added 1/1997; eliminated 10/1998; 7/2000-7/2005 (not listed) | | NAKINA |
| 21 | TSXX | Tri-State Generation & Transmission Association, Inc. | 1/94; added 1/97; eliminated 10/98; 7/2000 | | NRHS |
| 22 | TSXX | TRI-STATE GENERATION & TRANSMISSION ASSOCIATION, INC | | | PWRC |
| 23 | TSXX | Tri-State Generation and Transmission Association | | | RSRV |
| 24 | TSXX | TRI-STATE GENERATION & T | | | SCAC4 |
| 25 | TSXZ | TRANSAMERICA LEASING INCORPORATED | | | PWRC |
| 26 | TSXZ | TAL International | | | RSRV |
| 27 | TSXZ | TRANSAMERICA LEASING INC | | | SCAC4 |
