| Abbreviation | Definition |
|---|---|
| TEX | Idealist Datasheet |
| TEX | Text document (TeX Device Independent File Format) (Scientific Word) |
| TEX | Texture file |
| TEXT | Text file |
| TF | TinyFugue MUD client macro |
| TF | Turbo Profiler Configuration |
| TFA | Turbo Profiler Area File |
| TFC | Tobi's Floppy Cataloguer Catalogue file |
| TFH | Turbo Profiler Help file |
| TFM | Tagged Font Metric file |
| TFS | Turbo Profiler Statistical information |
| TFW | TIFF World files |
| TG | Technical Guidance (NRC Inspection Manual) |
| TG1 | On Target Project file |
| TGA | Truevision Targa format Bitmap graphics |
| TGD | Nimbus 7 SAMS Data File |
| TGH | Tiliagraph File |
| TGM | NEM Mega 3D Terrain Generator |
| TGT | Corel40 Custom File |
| TGW | TerragenWorld Atmosphere File |