| Abbreviation | Definition |
|---|---|
| TPFX | Triangle Pacific (GE Rail Services) |
| TPGX | Technical Propellants |
| TPGX | Technical Propellants Incorporated |
| TPHU | Tiphook Container Rental Company Limited |
| TPHU | Tiphook Container Rental Limited |
| TPHX | Thomas Payne Holdings |
| TPHX | Thomas Payne Holdings Incorporated |
| TPIU | Tropicana Products (PepsiCo) |
| TPIU | Tropicana Products Incorporated |
| TPIX | Tropicana Products (PepsiCo) |
| TPIX | Tropicana Products Sales Incorporated |
| TPKU | Toledo Peoria and Western Railway Corporation |
| TPKU | Trafpak Limited Aylesbury, G. B. |
| TPLX | The Pacific Lumber Company |
| TPLX | Trans-Pacific Lines |
| TPMU | EXSIF Worldwide |
| TPPX | Thilmany Pulp and Paper |
| TPRX | Texas Power and Light |
| TPSX | TPS Leasing |
| TPSX | TPS Leasing Company L.L.C. |