| tid | Topocad Import Data |
| tid | Tru-Designer Transfer Details Data |
| tid | 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 |
| tig | 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 |
| timeline | Timeline Data |
| timg | Playground OSS Image Data |
| tin | Bentley GEOPAK Environmental Modeling Systems Data |
| tin | Carlson 2016 Triangulated Irregular Network Data |
| tin | WMS Triangulated Irregular Networks Data |
| tin | WRAP TABLES Input Data |
| tinf | Microsoft Windows Theme Info |
| tiny | Gnome Desktop Tiny Data |
| tiq | Tektronics RSA306 TIQ Data |
| tis | Lucene Term Infos |
| tis | Tru-Designer Captured Device Settings Data |
| tis | TruKnox Tru-i Suite Data |
| tisv | WabbitDS Save File |
| tit | CXTerm Text Input Table |
