| 1 | TXP | Linea Aerea Taxpa Ltda. | Callsign: Taxpa, Formerly Taxpa Chile | RCH | AVCODES |
| 2 | TXP | Aircompany Asian Express Airline LLC | IATA: KV, Callsign: Tajik Express, Designator KV recalled by IATA | TJ | AVCODES |
| 3 | TXPA | TRIFECTA TRANSPORT LLC | | | SCAC4 |
| 4 | TXPD | TRANSPORT EXPRESS DUGUAY | | | SCAC4 |
| 5 | TXPF | Texas Pacifico Transportation, Ltd. | 7/2005 | | NAKINA |
| 6 | TXPF | TEXAS PACIFICO TRANSPORTATION, LTD. | | | PWRC |
| 7 | TXPF | Texas Pacifico Transportation Limited | | | RSRV |
| 8 | TXPF | TEXAS PACIFICO TRANSPORTATION LTD | | | SCAC4 |
| 9 | TXPG | TXP INC | | | SCAC4 |
| 10 | TXPI | TRINITY EXPRESS INC | | | SCAC4 |
| 11 | TXPK | TRANS PAPA LOGISTICS INC | | | SCAC4 |
| 12 | TXPM | TRANSPORTES RENTERIA | | | SCAC4 |
| 13 | TXPP | TRANSPEX PLUS | | | SCAC4 |
| 14 | TXPR | TAZ EXPRESS INC | | | SCAC4 |
| 15 | TXPS | TRANSPORTES EXPRESS | | | SCAC4 |
| 16 | TXPW | TA TRANSPORTE | | | SCAC4 |
| 17 | TXPX | Texas Petrochemicals Corp. | added 10/1985; 1/1994; eliminated 10/1998; 7/2000 (not listed) | | NAKINA |
| 18 | TXPX | Texas Petrochemicals Corp. | 1/94; eliminated 10/98; 7/2000 | | NRHS |
| 19 | TXPX | TEXAS PETROCHEMICALS CORPORATION | | | PWRC |
| 20 | TXPX | Texas Petrochemicals Corporation | | | RSRV |
| 21 | TXPY | TREASURE TRANSPORTATION INC | | | SCAC4 |
