| tf10 | IRIG 106 Data Transfer Data |
| tfa | Borland Turbo Profiler Area Data |
| tfa | TreeSoft CashFlow Analysis Data |
| tfam | PLINK Individual Information File |
| tfd | Tape Format Requirements Document |
| tfh | Borland Turbo Profiler Help Data |
| tfi | Sharing Transaction Fraud Data |
| tfi | Topocad Transformation Information Data |
| tfields | Tome Editor Field Definition Data |
| tfil | World of Warcraft Software Update |
| tfl | ALKFLOW Total Flow Data |
| tfl | Tific Client Data |
| tfl | Trimble Field Link Data |
| tflow | MTFLOW Data |
| tfr | 4D Database Windows Formula Document |
| tfrm | 4D Database Mac OS X Formula Document |
| tfv | YETI Vegetation Plot Database Export File |
| tfx | Avid Pro Tools Eleven Rack Presets |
| tfy | Terrafy Module |
| tfz | FBS Vehicle Database |
| tg2 | tg2htm Saved Metadata |
| tg3 | TexGen 3 Geometry Data |
| tgc | Terragen Clip File |
| tgd | Nimbus 7 SAMS Data |
| tgd | Nimbus 7 SAMS Raw Data |
| tgd | Terragen 2 World |
| tgf | libigl Control Handle Graphs |
| tgf | Stonevoice Translator Tag Data |
| tgf | Tree Generator Tree Data |
| tgg | eMoflon Triple Graph Grammars Data |
