| Abbreviation | Definition |
|---|---|
| TCG | Tucson Cornelia and Gila Bend Railroad Company |
| TCG | Tucson, Cornelia and Gila Bend Railroad |
| TCGX | Tri-County Gas |
| TCGX | Tri-County Gas Incorporated |
| TCGZ | Columbus and Greenville Railway |
| TCIX | Trinity Chemical Leasing |
| TCIX | Trinity Chemical Leasing L.L.C. |
| TCKR | Turtle Creek Industrial Railroad |
| TCKR | Turtle Creek Industrial RailRoad, Incorporated |
| TCKU | Triton Container International |
| TCLU | TCL Tankcargo Container Leasing SA |
| TCLU | TCL Tankcargo Container Leasing, S. A. |
| TCLX | Trinity Chemical Leasing |
| TCLX | Trinity Chemical Leasing L. L. C. |
| TCMX | CIT Group/ Capital Finance Incorporated |
| TCMX | Transportation of America |
| TCNU | Triton Container International |
| TCOX | The Concrete |
| TCOZ | Terminal Consolidation |
| TCOZ | Terminal Consolidation Company |