| Extension | File Description |
| .TEICORPUS | Settings Files |
| .TEJ | Uncommon Files |
| .TEK | Uncommon Files |
| .TEL | Uncommon Files |
| .TELL | Uncommon Files |
| .TEM | Uncommon Files |
| .TEMP | Misc Files |
| .TEMPLATE | Text Files |
| .TEMPLATES | Uncommon Files |
| .TEN | Uncommon Files |
| .TEO | Uncommon Files |
| .TEP | Uncommon Files |
| .TEQ | Uncommon Files |
| .TER | Uncommon Files |
| .TERMINATOR | Uncommon Files |
| .TERRAIN | Uncommon Files |
| .TES | Uncommon Files |
| .TEST | Uncommon Files |
| .TEST1 | Uncommon Files |
| .TEST2 | Uncommon Files |
| .TESTS | Uncommon Files |
| .TET | Data Files |
| .TEU | Uncommon Files |
| .TEV | Uncommon Files |
| .TEW | Uncommon Files |
| .TEX | Raster Image Files |
| .TEXEL | Uncommon Files |
| .TEXI | Uncommon Files |
| .TEXINFO | Uncommon Files |
| .TEXT | Text Files |
| .TEXTALKER | Uncommon Files |
| .TEXTBUILD | Uncommon Files |
| .TEXTCLIPPI | Text Files |
| .TEXTDB | Uncommon Files |
| .TEXTEDIT | Uncommon Files |
| .TEXTILE | Developer Files |
| .TEXTTOOL | Uncommon Files |
| .TEY | Uncommon Files |
| .TEZ | Uncommon Files |
| .TF | Uncommon Files |
| .TF0 | Uncommon Files |
| .TF1 | Uncommon Files |
| .TF10 | Uncommon Files |
| .TF2 | Uncommon Files |
| .TF3 | Uncommon Files |
| .TF4 | Uncommon Files |
| .TF5 | Uncommon Files |
| .TF6 | Uncommon Files |
| .TF7 | Uncommon Files |
| .TF8 | Uncommon Files |
| .TF9 | Uncommon Files |
| .TFA | Data Files |
| .TFB | Uncommon Files |
| .TFC | Raster Image Files |
| .TFD | Uncommon Files |
| .TFE | Uncommon Files |
| .TFF | Uncommon Files |
| .TFG | Uncommon Files |
| .TFH | Uncommon Files |
| .TFI | Data Files |
| .TFJ | Uncommon Files |
| .TFK | Uncommon Files |
| .TFL | Uncommon Files |
| .TFM | Font Files |
| .TFN | Uncommon Files |
| .TFO | Uncommon Files |
| .TFP | Uncommon Files |
| .TFQ | Uncommon Files |
| .TFR | Uncommon Files |
| .TFS | Uncommon Files |
| .TFT | Uncommon Files |
| .TFU | Uncommon Files |
| .TFV | Uncommon Files |
| .TFW | GIS Files |
| .TFX | Uncommon Files |
| Extension | File Description |
| .TFY | Uncommon Files |
| .TFZ | Uncommon Files |
| .TG | Compressed Files |
| .TG0 | Uncommon Files |
| .TG1 | Uncommon Files |
| .TG2 | Uncommon Files |
| .TG3 | Uncommon Files |
| .TG4 | Raster Image Files |
| .TG5 | Uncommon Files |
| .TG6 | Uncommon Files |
| .TG7 | Uncommon Files |
| .TG8 | Uncommon Files |
| .TG9 | Uncommon Files |
| .TGA | Raster Image Files |
| .TGB | Uncommon Files |
| .TGC | Uncommon Files |
| .TGD | Uncommon Files |
| .TGE | Uncommon Files |
| .TGF | Data Files |
| .TGG | Uncommon Files |
| .TGH | Uncommon Files |
| .TGI | Uncommon Files |
| .TGJ | Uncommon Files |
| .TGK | Uncommon Files |
| .TGL | Uncommon Files |
| .TGM | Uncommon Files |
| .TGN | Uncommon Files |
| .TGO | Uncommon Files |
| .TGP | Uncommon Files |
| .TGQ | Uncommon Files |
| .TGR | Uncommon Files |
| .TGS | Uncommon Files |
| .TGT | Uncommon Files |
| .TGU | Uncommon Files |
| .TGV | Uncommon Files |
| .TGW | Uncommon Files |
| .TGWORLD | Uncommon Files |
| .TGX | Uncommon Files |
| .TGY | Uncommon Files |
| .TGZ | Compressed Files |
| .TH | GIS Files |
| .TH0 | Uncommon Files |
| .TH1 | Uncommon Files |
| .TH2 | Uncommon Files |
| .TH3 | Uncommon Files |
| .TH4 | Uncommon Files |
| .TH5 | Uncommon Files |
| .TH6 | Uncommon Files |
| .TH7 | Uncommon Files |
| .TH8 | Uncommon Files |
| .TH9 | Uncommon Files |
| .THA | Uncommon Files |
| .THANKS | Uncommon Files |
| .THB | Uncommon Files |
| .THC | Uncommon Files |
| .THD | Uncommon Files |
| .THE | Settings Files |
| .THEARTOFTU | Uncommon Files |
| .THEME | System Files |
| .THEME2 | Uncommon Files |
| .THEME3 | Uncommon Files |
| .THESE | Uncommon Files |
| .THEWITCHER | Uncommon Files |
| .THE_YEAR_3 | Uncommon Files |
| .THF | Uncommon Files |
| .THG | Uncommon Files |
| .THH | Uncommon Files |
| .THI | Uncommon Files |
| .THINK | Uncommon Files |
| .THIS | Uncommon Files |
| .THJ | Uncommon Files |
| .THK | Uncommon Files |
| .THL | Uncommon Files |
| .THM | Executable Files |
| .THML | Uncommon Files |
