ISO 639:t

| tuc  |  |  | I/L |  |  | Mutu |  |  |  |  |  |
| tud  |  |  | I/E |  |  | Tuxá |  |  |  |  |  |
| tue  |  |  | I/L |  |  | Tuyuca |  | tuyuka |  |  |  |
| tuf  |  |  | I/L |  |  | Tunebo, Central |  |  |  |  |  |
| tug  |  |  | I/L |  |  | Tunia |  |  |  |  |  |
| tuh  |  |  | I/L |  |  | Taulil |  |  |  |  |  |
| tui  |  |  | I/L |  |  | Tupuri |  |  |  |  |  |
| tuj  |  |  | I/L |  |  | Tugutil |  |  |  |  |  |
| tuk  | tk | tuk | I/L | Turkic | Түркмен | Turkmen | turkmène | turcomano | 土库曼语 | туркменский | Turkmenisch |
| tul  |  |  | I/L |  |  | Tula |  |  |  |  |  |
| tum  |  | tum | I/L |  | chiTumbuka | Tumbuka | tumbuka |  | 奇图姆布卡语 | тумбука | Tumbuka |
| tun  |  |  | I/L |  |  | Tunica | tunica |  |  |  |  |
| tuo  |  |  | I/L |  |  | Tucano |  | tucano |  |  |  |
| tuq  |  |  | I/L |  |  | Tedaga |  |  |  |  |  |
| tur  | tr | tur | I/L | Turkic | Türkçe | Turkish | Turc | Turco | 土耳其语 | турецкий | Türkisch |
| tus  |  |  | I/L |  | Skarù∙rę’ | Tuscarora | tuscarora | tuscarora |  |  |  |
| tuu  |  |  | I/L |  |  | Tututni |  |  |  |  |  |
| tuv  |  |  | I/L |  | Ng'aturk(w)ana | Turkana | turkana |  | 图尔卡纳语 |  |  |
| tux  |  |  | I/E |  |  | Tuxináwa | tuxináwa |  |  |  |  |
| tuy  |  |  | I/L |  |  | Tugen, North |  |  |  |  |  |
| tuz  |  |  | I/L |  |  | Turka |  |  |  |  |  |
| tva  |  |  | I/L |  |  | Vaghua |  |  |  |  | Vaghua |
| tvd  |  |  | I/L |  |  | Tsuvadi |  |  |  |  |  |
| tve  |  |  | I/L |  |  | Te'un |  |  |  |  |  |
| tvk  |  |  | I/L |  |  | Ambrym, Southeast |  |  |  |  | Südost-Ambrym |
| tvl  |  | tvl | I/L |  | 'gana Tuvalu | Tuvalu | Tuvalu |  | 图瓦卢语 | тувалу | Tuvaluanisch |
| tvm  |  |  | I/L |  |  | Tela-Masbuar |  |  |  | тэла-масбуар | Tela-Masbuar |
| tvn  |  |  | I/L |  |  | Tavoyan |  |  |  |  |  |
| tvo  |  |  | I/L |  |  | Tidore |  |  |  |  |  |
| tvs  |  |  | I/L |  |  | Taveta |  |  |  |  |  |
| tvt  |  |  | I/L |  |  | Naga, Tutsa |  |  |  |  |  |
| tvu  |  |  | I/L |  |  | Tunen |  |  |  |  |  |
| tvw  |  |  | I/L |  |  | Sedoa |  |  |  |  |  |
| tvx  |  |  | I/E |  |  | Taivoan |  |  |  |  |  |
| tvy  |  |  | I/E |  |  | Pidgin, Timor |  |  |  |  |  |
| twa  |  |  | I/E |  |  | Twana |  |  |  |  |  |
| twb  |  |  | I/L |  |  | Tawbuid, Western |  |  |  |  |  |
| twc  |  |  | I/E |  |  | Teshenawa |  |  |  |  |  |
| twd  |  |  | I/L |  |  | Twents |  |  |  |  |  |
| twe  |  |  | I/L |  |  | Tewa (Indonesia) |  |  |  |  |  |
| twf  |  |  | I/L |  |  | Tiwa, Northern |  |  |  |  |  |
| twg  |  |  | I/L |  |  | Tereweng |  |  |  |  |  |
| twh  |  |  | I/L |  |  | Tai Dón |  |  | 傣端语; 金平傣语 |  |  |
| twi  | tw | twi | I/L | Niger–Congo | Twi | Twi | twi | twi | 契维语; 特威语; 多威语 | тви | Twi |
| twl  |  |  | I/L |  |  | Tawara |  |  |  |  |  |
| twm  |  |  | I/L |  |  | Tawang Monpa |  |  | 错那-门巴语 |  |  |
| twn  |  |  | I/L |  |  | Twendi |  |  |  |  |  |
| two  |  |  | I/L |  |  | Tswapong |  |  |  |  |  |
| twp  |  |  | I/L |  |  | Ere |  |  |  |  |  |
| twq  |  |  | I/L |  |  | Tasawaq |  |  |  |  |  |
| twr  |  |  | I/L |  |  | Tarahumara, Southwestern |  |  |  |  |  |
| twt  |  |  | I/E |  |  | Turiwára |  | turiwára |  |  |  |
| twu  |  |  | I/L |  |  | Termanu |  |  |  |  | Termanu |
| tww  |  |  | I/L |  |  | Tuwari |  |  |  |  |  |
| twx  |  |  | I/L |  |  | Tewe |  |  |  |  |  |
| twy  |  |  | I/L |  |  | Tawoyan |  |  |  |  |  |
| txa  |  |  | I/L |  |  | Tombonuwo |  |  |  |  |  |
| txb  |  |  | I/A |  |  | Tokharian B | tokharien B |  | 龟兹语; 西吐火罗语 |  |  |
| txc  |  |  | I/E |  |  | Tsetsaut |  |  |  |  |  |
| txe  |  |  | I/L |  |  | Totoli |  |  |  |  |  |
| txg  |  |  | I/A |  |  | Tangut |  |  | 西夏语 |  |  |
| txh  |  |  | I/A |  |  | Thracian |  |  | 色雷斯语 |  |  |
| txi  |  |  | I/L |  |  | Ikpeng |  | ikpeng |  |  |  |
| txj  |  |  | I/L | Nilo-Saharan |  | Tarjumo |  |  |  |  |  |
| txm  |  |  | I/L |  |  | Tomini |  |  |  |  |  |
| txn  |  |  | I/L |  |  | Tarangan, West |  |  |  |  |  |
| txo  |  |  | I/L |  |  | Toto |  |  |  |  |  |
| txq  |  |  | I/L |  |  | Tii |  |  |  |  |  |
| txr  |  |  | I/A |  |  | Tartessian |  |  |  |  |  |
| txs  |  |  | I/L |  |  | Tonsea |  |  |  |  |  |
| txt  |  |  | I/L |  |  | Citak |  |  |  |  |  |
| txu  |  |  | I/L |  |  | Kayapó | kayapó |  |  |  |  |
| txx  |  |  | I/L |  |  | Tatana |  |  |  |  |  |
| txy  |  |  | I/L |  |  | Malagasy, Tanosy |  |  |  |  |  |
| tya  |  |  | I/L |  |  | Tauya |  |  |  |  |  |
| tye  |  |  | I/L |  |  | Kyenga |  |  |  |  |  |
| tyh  |  |  | I/L |  |  | O'du |  |  | 俄都语 |  |  |
| tyi  |  |  | I/L |  |  | Teke-Tsaayi |  |  |  |  |  |
| tyj  |  |  | I/L |  |  | Tai Do |  |  |  |  |  |
| tyl  |  |  | I/L |  |  | Thu Lao |  |  |  |  |  |
| tyn  |  |  | I/L |  |  | Kombai |  |  |  |  |  |
| typ  |  |  | I/E |  |  | Thaypan |  |  |  |  |  |
| tyr  |  |  | I/L |  |  | Tai Daeng |  |  |  |  |  |
| tys  |  |  | I/L |  |  | Tày Sa Pa |  |  |  |  |  |
| tyt  |  |  | I/L |  |  | Tày Tac |  |  |  |  |  |
| tyu  |  |  | I/L |  |  | Kua |  |  |  |  |  |
| tyv  |  | tyv | I/L |  | Тыва | Tuvinian | touva |  | 图瓦语 | тувинский | Tuwinisch |
| tyx  |  |  | I/L |  |  | Teke-Tyee |  |  |  |  |  |
| tyz  |  |  | I/L |  |  | Tày |  |  | 岱依语 |  |  |
| tza  |  |  | I/L |  |  | Tanzanian Sign Language |  |  | 坦桑尼亚手语 |  |  |
| (tzb)  |  |  | I/L |  |  | Tzeltal, Bachajón |  |  |  |  |  |
| (tzc)  |  |  | I/L |  |  | Tzotzil, Chamula |  |  |  | чамула тцотциль | Chamula-Tzotzil |
| (tze)  |  |  | I/L |  |  | Tzotzil, Chenalhó |  |  |  |  |  |
| tzh  |  |  | I/L |  |  | Tzeltal, Oxchuc |  |  |  |  |  |
| tzj  |  |  | I/L |  |  | Tzutujil, Eastern |  |  |  |  |  |
| tzl  |  |  | I/C |  |  | Talossan |  |  |  |  |  |
| tzm  |  |  | I/L |  | ⵜⵎⴰⵣⵉⵖⵜ | Tamazight, Central Atlas |  |  | 塔马齐格特语 |  |  |
| tzn  |  |  | I/L |  |  | Tugun |  |  |  | тугун | Tugun |
| tzo  |  |  | I/L |  |  | Tzotzil, Venustiano Carranza |  |  |  |  |  |
| (tzs)  |  |  | I/L |  |  | Tzotzil, San Andrés Larrainzar |  |  |  |  |  |
| (tzt)  |  |  | I/L |  |  | Tzutujil, Western |  |  |  |  |  |
| (tzu)  |  |  | I/L |  |  | Tzotzil, Huixtán |  |  |  |  |  |
| tzx  |  |  | I/L |  |  | Tabriak |  |  |  |  |  |
| (tzz)  |  |  | I/L |  |  | Tzotzil, Zinacantán |  | tzotzil zinacanteco |  |  |  |