| tgd | Nimbus 7 SAMS Data |
| Nimbus 7 SAMS Raw Data |
| Terragen 2 World |
| tgf | libigl Control Handle Graphs |
| Stonevoice Translator Tag Data |
| Tree Generator Tree Data |
| tgg | eMoflon Triple Graph Grammars Data |
| tgl | SkyMap Target Lists |
| tgmd | WDTV ThumbGen Movie Metadata |
| tgmg | TabGroups Manager for Firefox Exported Group Data |
| tgo | Terragen Object File |
| tgp | FM-ONE Target Protocol Data |
| ThumbGen Profile |
| tgs | GSTree Tree Data |
| tgt | Carlson 2016 Template Grade Table Data |
| Spyder2PRO Target Data |
| tgw | FM-ONE Target Write-in Control Data |
| Terragen World |
| tgworld | Terragen World |
| th | Therion Data |
| th2 | Cadfil Thickness Data |
| Therion TH2 Map |
| tha | Microsoft Windows Thai Noise-Words List |
| Thunderbird MoreFunctionsForAddressBook Add-on Data |
| the | Microsoft Plus! Theme File |
| them | Microsoft Windows Desktop Theme |
| theme | Apple iDVD Theme Data |
| Comodo IS Theme Data |
| Microsoft Windows Desktop Theme |
| themepack | Microsoft Windows 7 Theme Pack |
| thf | LS-DYNA Time History Database |
| PCAnywhere Thin Host File |
| thi | AbleCommerce Wizard Theme Index |
| thk | Cadfil Thickness Data |
| thl | Cyberlink PowerProducer Image Thumbnail |
| thm | DrawPlus Theme Data |
| Messenger Plus! Live Skin Resource |
| OpenOffice.org Theme Data |
| THM Desktop Macro Data |
| Thunderbird MoreFunctionsForAddressBook Mailing Lists Data |
| thng | Component Manager for Mac Resource Data |
| thnl | Graphics Workshop Professional Thumbnail |
| thp | Intuit TurboTax Tax Line Description |
| thr | IR Prognosis Threshold Data |
| Pro/ENGINEER Thread Parameter Data |
| ths | Corel WordPerfect Thesaurus Dictionary |
| tht | FCEUX Text Hooker Table Data |
| Tralix HTML Transport Data |
| thu | THUNDER Data |
| thumb | Snagit Studio Thumbnail Data |
| thumbdata | Android Thumbnail Data |
| thumbdata3 | Android Thumbnail Data |
| thumbdata33 | Android Thumbnail Data |
| thumbdata4 | Android Thumbnail Data |
| thumbdata5 | Android Thumbnail Data |
| thumbindex | Motorola Media Finder Thumbnail Index |
| thumbnail | Android Thumbnail Cache Data |
| thumbs | Windows 10 Mobile Thumbnail Data |
| thumbsdb | PixFiler Thumbnail Database |
| tia | Siemens TIA Portal Data File |
| tic | ArcInfo Coverage TIC |
| TIC-80 Game Cartridge Data |
| Tru-Designer Cache |
| ticr | Amazon Kindle eBook Info |
| tid | Topocad Import Data |
| Tru-Designer Transfer Details Data |
| Zemax Refractive Index Profile Data |
| tidx | AACS Thumbnail Index File |
| tie | CrossOver v10 CrossTie Installer |
| tifenx | Egis Encrypted TIFF Data |
| tiffenx | Egis Encrypted TIFF Data |
| tifx | Egis Encrypted TIFF Data |
| tig | COREX Syntactic Annotation Data |
| TI Connect Group File |
| tii | Lucene Term Info Index |
| tiip | DXF-TIIP Pattern Data |
| tik | Nintendo Switch Encryption Ticket |
| tika | Apache Tika Data |
| tim | Vixen Timed Sequence Data |
| time | Light Time |
