| taraa | Tape Archive Split Archive |
| tardist | IRIX TAR Distribution Archive |
| targz | Unix Gzipped TAR Archive |
| taz | Unix Gzipped TAR Archive |
| tbk | The Bat! Backup Archive |
| tbz | Bzip Compressed Tape Archive |
| tbz2 | Bzip2 Compressed Tape Archive |
| tce | Tiny Core Linux Extension |
| tck | BMISuite BMIScan Compressed Archive |
| tgz | Drobo Application Package |
| tgz | Unix Gzipped TAR Archive |
| thr | THOR Compressed Data |
| tibkp | Titanium Backup Data |
| tibx | Acronis Backup v12 Archive |
| tini | Chrome OS Crostini Backup |
| tkz | TeKton3D Project Archive |
| tmf | TiVo Video Recording Archive |
| to4 | Top 4 Compressed Data |
| toppkg | TopSolid Package |
| tpafz | YouMinds Composer Portable Archive |
| tpf | TexMod Package File |
| tpk | Tizen Application Package |
| tpkg | tpkg-builder data |
| tpl | Ewisoft Website Builder Package |
| tpxz | Pixz Compressed Tarball |
| ts3_iconpack | TeamSpeak 3 Icon Package |
| tsep | Tekla Structures Extension Package |
| ttpkg | TomTom Package |
| txz | XZ Compressed Tar Archive |
| tz | Compressed Tape Archive |
| tzb | TAR.Z.btoa Compressed Archive |
| tzip | Tzip Compressed Text |
| tzp | TrueZIP Ecnrypted JAR Archive |
| tzr | ANSYS IcePak Project Package |
| tzst | Zstandard Compressed TAR Archive |
