| Abbreviation | Definition |
|---|---|
| TFLU | Trans Freight Lines Incorporated |
| TFM | Grupo Transportación Ferroviaria Mexicana |
| TFM | Transportacion Ferroviaria Mexicana, S. A. de C. V. |
| TFR | Transnet Freight Rail |
| TFTX | Tifton Terminal Railway Museum |
| TFVM | Terminal Ferroviaria Del Velle De Mexico |
| TFWR | Transport For Wales Rail |
| TFZ | Terminal Freight Handling |
| TFZ | Terminal Freight Handling Company |
| TGAX | PCS Phosphate Company Incorporated |
| TGAX | Texasgulf |
| TGBU | Textainer |
| TGBU | Textainer Incorporated |
| TGCU | TCS Transglobe Container Services |
| TGCU | TCS Transglobe Container Services GMBH |
| TGCU | Touax (Mitsui O.S.K. Lines) |
| TGCX | PolyOne |
| TGI | Track Gauge Irregularities |
| TGI | Track Gauge Irregularity |
| TGIX | PCS Phosphate Company Incorporated |