# ISO 639:t

This is a list of ISO 639-3 language codes starting with T.
Index | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z
Abbreviations are used in the table as follows:
* Scope (Archived April 21, 2006, at the Wayback Machine. Additional archives: December 15, 2023.): I = individual language, M = macrolanguage, S = special code
* Type (Archived April 21, 2006, at the Wayback Machine. Additional archives: December 14, 2023.): A = ancient (extinct since ancient times), C = constructed, E = extinct (in recent times), H = historical (distinct from its modern form), L = living, S = special code
Retired codes are enclosed in (parentheses).
The column Family contains the generic English name of the language's family or macrolanguage.
| ISO 639 codes | ISO 639 codes | ISO 639 codes | Scope/Type | Family | Language names | Language names | Language names | Language names | Language names | Language names | Language names |
| 639-3 | 639-1 | 639-2B | Scope/Type | Family | Native | eng | fra | spa | zho | rus | deu |
| taa | | | I/L | | | Tanana, Lower | tanana | | | | |
| tab | | | I/L | | табасаран | Tabassaran | tabassaran | tabassaran | 塔巴萨兰语 | табасаранский | |
| tac | | | I/L | | | Tarahumara, Lowland | | | | | |
| tad | | | I/L | | | Tause | | | | | |
| tae | | | I/L | | | Tariano | | | | | |
| taf | | | I/L | | | Tapirapé | | tapirapé | | | |
| tag | | | I/L | | | Tagoi | | | | | |
| tah | ty | tah | I/L | Austronesian | te reo Tahiti | Tahitian | tahitien | tahitiano | 塔希提语、大溪地语 | таитянский | Tahitianisch |
| taj | | | I/L | | | Tamang, Eastern | | | | | |
| tak | | | I/L | | | Tala | | | | | |
| tal | | | I/L | | | Tal | | | | | |
| tam | ta | tam | I/L | Dravidian | தமிழ் | Tamil | tamoul | Tamil | 泰米尔语; 坦米尔语; 淡米尔语 | тамильский | Tamilisch |
| tan | | | I/L | | | Tangale | | | | | |
| tao | | | I/L | | | Yami | | | 达悟语 | | Yami |
| tap | | | I/L | | | Taabwa | | | | | |
| taq | | | I/L | | تَمَاشَقْ | Tamasheq | | | 塔马舍克语 | | |
| tar | | | I/L | | Ralámuli | Tarahumara, Central | | tarahumara central | | | |
| tas | | | I/E | | | Tay Boi | | | | | |
| tat | tt | tat | I/L | Turkic | Tatarça | Tatar | tatar | tártaro | 塔塔尔语; 鞑靼语 | татарский | Tatarisch |
| tau | | | I/L | | | Tanana, Upper | | | | | |
| tav | | | I/L | | | Tatuyo | | tatuyo | | | |
| taw | | | I/L | | | Tai | | | | | |
| tax | | | I/L | | | Tamki | | | | | |
| tay | | | I/L | | | Atayal | | | 泰雅语 | атаял | Atayal |
| taz | | | I/L | | | Tocho | | | | | |
| tba | | | I/L | | | Tubarão | | | | | |
| (tbb) | | | I/E | | | Tapeba | | | | | |
| tbc | | | I/L | | | Takia | | | | | |
| tbd | | | I/L | | | Kaki Ae | | | | | |
| tbe | | | I/L | | | Tanimbili | | | | | |
| tbf | | | I/L | | | Mandara | | | | | |
| tbg | | | I/L | | | Tairora, North | | | | | |
| tbh | | | I/E | | | Thurawal | | | | | |
| tbi | | | I/L | | | Gaam | | | | | |
| tbj | | | I/L | | | Tiang | | | | | |
| tbk | | | I/L | | | Tagbanwa, Calamian | | | | | |
| tbl | | | I/L | | | Tboli | | | | | Tboli |
| tbm | | | I/L | | | Tagbu | | | | | |
| tbn | | | I/L | | | Tunebo, Barro Negro | | | | | |
| tbo | | | I/L | | | Tawala | | | | | |
| tbp | | | I/L | | | Taworta | | | | | |
| tbr | | | I/L | | | Tumtum | | | | | |
| tbs | | | I/L | | | Tanguat | | | | | |
| tbt | | | I/L | | | Tembo (Kitembo) | | | | | |
| tbu | | | I/E | | | Tubar | | tubar | | | |
| tbv | | | I/L | | | Tobo | | | | | |
| tbw | | | I/L | | tabanawa | Tagbanwa | | | | | |
| tbx | | | I/L | | | Kapin | | | | | |
| tby | | | I/L | | | Tabaru | | | | | |
| tbz | | | I/L | | | Ditammari | | | | | |
| tca | | | I/L | | | Ticuna | ticuna | | | | |
| tcb | | | I/L | | | Tanacross | | | | | |
| tcc | | | I/L | | | Datooga | | | | | |
| tcd | | | I/L | | | Tafi | | | | | |
| tce | | | I/L | | | Tutchone, Southern | | | | | |
| tcf | | | I/L | | | Tlapanec, Malinaltepec | | | | | |
| tcg | | | I/L | | | Tamagario | | | | | |
| tch | | | I/L | | | Turks And Caicos Creole English | | | 特克斯和凯科斯克里奥尔英语 | | |
| tci | | | I/L | | | Wára | | | | | |
| tck | | | I/L | | | Tchitchege | | | | | |
| tcl | | | I/E | | | Taman (Myanmar) | | | | | |
| tcm | | | I/L | | | Tanahmerah | | | | | |
| tcn | | | I/L | | | Tichurong | | | | | |
| tco | | | I/L | | | Taungyo | | | | | |
| tcp | | | I/L | | | Chin, Tawr | | | | | |
| tcq | | | I/L | | | Kaiy | | | | | |
| tcs | | | I/L | | | Torres Strait Creole | | | | | |
| tct | | | I/L | | | T'en | t'en | | 佯僙语 | | |
| tcu | | | I/L | | | Tarahumara, Southeastern | | | | | |
| tcw | | | I/L | | | Tecpatlán Totonac | | | | | |
| tcx | | | I/L | | தோதா | Toda | | | 托达语 | | |
| tcy | | | I/L | | ತುಳು | Tulu | | tulu | 图鲁语 | тулу | |
| tcz | | | I/L | | | Chin, Thado | | | | | |
| tda | | | I/L | | | Tagdal | | | | | |
| tdb | | | I/L | | | Panchpargania | | | 潘奇帕尔干语 | | |
| tdc | | | I/L | | | Emberá-Tadó | | | | | |
| tdd | | | I/L | | ᥖᥭᥰᥖᥬᥳᥑᥨᥒᥰ | Tai Nüa | | | 傣哪语; 傣纳语; 德宏傣语 | | |
| tde | | | I/L | | | Tiranige Diga Dogon | | | | | |
| tdf | | | I/L | | | Talieng | | | | | |
| tdg | | | I/L | | | Tamang, Western | | | | | |
| tdh | | | I/L | | | Thulung | | | | | |
| tdi | | | I/L | | | Tomadino | | | | | |
| tdj | | | I/L | | | Tajio | | | | | |
| tdk | | | I/L | | | Tambas | | | | | |
| tdl | | | I/L | | | Sur | | | | | |
| tdm | | | I/L | | | Taruma | | | | | |
| tdn | | | I/L | | | Tondano | | | | | |
| tdo | | | I/L | | | Teme | | | | | |
| tdq | | | I/L | | | Tita | | | | | |
| tdr | | | I/L | | | Todrah | | | | | |
| tds | | | I/L | | | Doutai | | | | | |
| tdt | | | I/L | | | Tetun Dili | | | | тетун дили | |
| (tdu) | | | I/L | | | Dusun, Tempasuk | | | | | |
| tdv | | | I/L | | | Toro | | | | | |
| tdx | | | I/L | | | Malagasy, Tandroy-Mahafaly | | | | | |
| tdy | | | I/L | | | Tadyawan | | | | | |
| tea | | | I/L | | | Temiar | | | | | |
| teb | | | I/E | | | Tetete | | tetete | | | |
| tec | | | I/L | | | Terik | | | | | |
| ted | | | I/L | | | Krumen, Tepo | | | | | |
| tee | | | I/L | | | Tepehua, Huehuetla | | tepehua de Huehuetla | | | |
| tef | | | I/L | | | Teressa | | | | | |
| teg | | | I/L | | | Teke-Tege | | | | | |
| teh | | | I/L | | | Tehuelche | | tehuelche | | | |
| tei | | | I/L | | | Torricelli | | | | | |
| tek | | | I/L | | | Teke, Ibali | | | | | |
| tel | te | tel | I/L | Dravidian | తెలుగు | Telugu | télougou | telugú | 泰卢固语 | телугу | Telugu |
| tem | | tem | I/L | | | Time | temne | | 泰姆奈语; 滕内语 | | Temnisch |
| ten | | | I/E | | | Tama (Colombia) | | | | | |
| teo | | | I/L | | | Teso | | | | | |
| tep | | | I/E | | | Tepecano | | tepecano | | | |
| teq | | | I/L | | | Temein | | | | | |
| ter | | ter | I/L | | | Tereno | tereno | | 特列纳语 | терено | |
| tes | | | I/L | | | Tengger | | | | | |
| tet | | tet | I/L | | Tetun | Tetum | tetum | | 特塔姆语; 德顿语 | | Tetun |
| teu | | | I/L | | | Soo | | | | | |
| tev | | | I/L | | | Teor | | | | | |
| tew | | | I/L | | | Tewa (USA) | | tewa | | | |
| tex | | | I/L | | | Tennet | | | | | |
| tey | | | I/L | | | Tulishi | | | | | |
| tez | | | I/L | Afro-Asiatic | | Tetserret | | | | | |
| tfi | | | I/L | | | Gbe, Tofin | | | | | |
| tfn | | | I/L | | | Tanaina | | | | | |
| tfo | | | I/L | | | Tefaro | | | | | |
| tfr | | | I/L | | | Teribe | | | | | |
| tft | | | I/L | | | Ternate | | | | | |
| tga | | | I/L | | | Sagalla | | | | | |
| tgb | | | I/L | | | Tebilung | | | | | |
| tgc | | | I/L | | | Tigak | | | | | Tigak |
| tgd | | | I/L | | | Ciwogai | | | | | |
| tge | | | I/L | | | Tamang, Eastern Gorkha | | | | | |
| tgf | | | I/L | | | Chalikha | | | | | |
| (tgg) | | | I/L | | | Tangga | | | | | |
| tgh | | | I/L | | | Tobagonian Creole English | | | | | |
| tgi | | | I/L | | | Lawunuia | | | | | |
| tgj | | | I/L | | | Tagin | | | | | |
| tgk | tg | tgk | I/L | Indo-European | тоҷикӣ | Tajik | tadjik | tayiko | 塔吉克语 | таджикский | Tadschikisch |
| tgl | tl | tgl | I/L | Austronesian | Tagálog | Tagalog | Tagalog | tagalo(g) | 塔加洛语; 塔加拉语; 他加禄语 | тагальский | Tagalog |
| tgn | | | I/L | | | Tandaganon | | | | | |
| tgo | | | I/L | | | Sudest | | | | | |
| tgp | | | I/L | | | Tangoa | | | | | |
| tgq | | | I/L | | | Tring | | | | | |
| tgr | | | I/L | | | Tareng | | | | | |
| tgs | | | I/L | | | Nume | | | | | |
| tgt | | | I/L | | | Tagbanwa, Central | | | | | |
| tgu | | | I/L | | | Tanggu | | | | | |
| tgv | | | I/E | | | Tingui-Boto | | | | | |
| tgw | | | I/L | | | Senoufo, Tagwana | | | | | |
| tgx | | | I/L | | Tāgizi | Tagish | | | | | |
| tgy | | | I/E | | | Togoyo | | | | | |
| tgz | | | I/E | | | Tagalaka | | | | | |
| tha | th | tha | I/L | Tai–Kadai | ภาษาไทย | Thai | thaï(landais) | tailandés | 泰语 | тайский | Thai(ländisch) |
| (thc) | | | I/L | | | Tai Hang Tong | | | | | |
| thd | | | I/L | | | Thayore | | | | | |
| the | | | I/L | | | Tharu, Chitwania | | | | | |
| thf | | | I/L | | | Thangmi | | | 唐米语 | | |
| thh | | | I/L | | | Tarahumara, Northern | | | | | |
| thi | | | I/L | | | Tai Long | | | 傣龙语 | | |
| thk | | | I/L | | | Tharaka | | | | | |
| thl | | | I/L | | | Tharu, Dangaura | | | | | |
| thm | | | I/L | | | Aheu | | | | | |
| thn | | | I/L | | | Thachanadan | | | | | |
| thp | | | I/L | | Nłeʼkepmxcin | Thompson | | | | | |
| thq | | | I/L | | | Tharu, Kochila | | | | | |
| thr | | | I/L | | | Tharu, Rana | | | | | |
| ths | | | I/L | | | Thakali | | | | | |
| tht | | | I/L | | Tāłtān | Tahltan | | | | | |
| thu | | | I/L | | | Thuri | | | | | |
| thv | | | I/L | | | Tamahaq, Tahaggart | | | | | |
| (thw) | | | I/L | | | Thudam | | | | | |
| (thx) | | | I/L | | | The | | | | | |
| thy | | | I/L | | | Tha | | | | | |
| thz | | | I/L | | | Tamajeq, Tayart | | | | | |
| tia | | | I/L | | | Tamazight, Tidikelt | | | | | |
| tic | | | I/L | | | Tira | | | | | |
| (tid) | | | I/L | | | Tidong | | | | | |
| (tie) | | | I/L | | | Tingal | | | | | |
| tif | | | I/L | | | Tifal | | | | | |
| tig | | tig | I/L | | Tigré | Tigre | tigré | tigré | 提格雷语 | тигре | |
| tih | | | I/L | | | Timugon Murut | | | | | Timugon Murut |
| tii | | | I/L | | | Tiene | | | | | |
| tij | | | I/L | | | Tilung | | | | | |
| tik | | | I/L | | | Tikar | | | | | |
| til | | | I/E | | | Tillamook | | | | | |
| tim | | | I/L | | | Timbe | | | | | |
| tin | | | I/L | | | Tindi | tindi | tindi | 廷迪语 | | |
| tio | | | I/L | | | Teop | | | | теоп | Teop |
| tip | | | I/L | | | Trimuris | | | | | |
| tiq | | | I/L | | | Tiéfo | | | | | |
| tir | ti | tir | I/L | Afro-Asiatic | ትግርኛ | Tigrinya | tigrigna | tigriña | 提格里尼亚语、提格利尼亚语 | тигринья | Tigrinja |
| tis | | | I/L | | | Itneg, Masadiit | | | | | |
| tit | | | I/L | | | Tinigua | | tinigua | | | |
| tiu | | | I/L | | | Itneg, Adasen | | | | | |
| tiv | | tiv | I/L | | | Tiv | tiv | | 蒂夫语 | тиви | |
| tiw | | | I/L | | | Tiwi | | tiwi | | | |
| tix | | | I/L | | | Tiwa, Southern | | | | | |
| tiy | | | I/L | | | Tiruray | | | | | |
| tiz | | | I/L | | | Tai Hongjin | | | 红金傣语 | | |
| tja | | | I/L | | | Tajuasohn | | | | | |
| tjg | | | I/L | | | Tunjung | | | | | Tunjung |
| tji | | | I/L | | | Tujia, Northern | | | 北土家语 | | |
| tjj | | | I/L | | | Tjungundji | | | | | |
| tjl | | | I/L | | | Tai Laing | | | | | |
| tjm | | | I/E | | | Timucua | | | | | |
| tjn | | | I/E | | | Tonjon | | | | | |
| tjo | | | I/L | | | Tamazight, Temacine | | | | | |
| tjp | | | I/L | | | Tjupany | | | | | |
| tjs | | | I/L | | | Tujia, Southern | | | 南土家语 | | |
| tju | | | I/E | | | Tjurruru | | | | | |
| tjw | | | I/L | | | Djabwurrung | | | | | |
| tka | | | I/E | | | Truká | | | | | |
| tkb | | | I/L | | | Buksa | | | | | |
| tkd | | | I/L | | | Tukudede | | | | | |
| tke | | | I/L | | | Takwane | | | | | |
| tkf | | | I/E | | | Tukumanféd | | tukumanféd | | | |
| tkg | | | I/L | | | Tesaka Malagasy | | | | | |
| (tkk) | | | I/L | | | Takpa | | | 塔克巴语 | | |
| tkl | | tkl | I/L | | | Tokelau | Tokelau(an) | | 托克劳语 | токелау | Tokelauanisch |
| tkm | | | I/E | | | Takelma | | takelma | | | |
| tkn | | | I/L | | | Toku-No-Shima | | | 德之岛琉球语 | | |
| tkp | | | I/L | | | Tikopia | | | | | Tikopia |
| tkq | | | I/L | | | Tee | | | | | |
| tkr | | | I/L | | | Tsakhur | tsakhour | tsakhur | | цахурский | |
| tks | | | I/L | | | Takestani | | | | | |
| tkt | | | I/L | | | Tharu, Kathoriya | | | | | |
| tku | | | I/L | | | Upper Necaxa Totonac | | | | | |
| tkv | | | I/L | Austronesian | | Mur Pano | | | | | |
| tkw | | | I/L | | | Teanu | | | | | Teanu |
| tkx | | | I/L | | | Tangko | | | | | |
| tkz | | | I/L | | | Takua | | | | | |
| tla | | | I/L | | | Tepehuan, Southwestern | | | | | |
| tlb | | | I/L | | | Tobelo | | | | | |
| tlc | | | I/L | | | Totonac, Yecuatla | | | | | |
| tld | | | I/L | | | Talaud | | | | | |
| (tle) | | | I/L | | | Southern Marakwet | | | | | |
| tlf | | | I/L | | | Telefol | | | | | |
| tlg | | | I/L | | | Tofanma | | | | | |
| tlh | | tlh | I/C | | tlhIngan Hol | Klingon | klingon | klingon | 克林贡语 | клингонский | Klingonisch |
| tli | | tli | I/L | | Lingít | Tlingit | tlingit | tlingit | 特林吉特语 | тлингит | Tlingit |
| tlj | | | I/L | | | Talinga-Bwisi | | | | | |
| tlk | | | I/L | | | Taloki | | | | | |
| tll | | | I/L | | | Tetela | | | | тетела | |
| tlm | | | I/L | | | Tolomako | | | | | |
| tln | | | I/L | | | Talondo' | | | | | |
| tlo | | | I/L | | | Talodi | | | | | |
| tlp | | | I/L | | | Totonac, Filomena Mata-Coahuitlán | | | | | |
| tlq | | | I/L | | | Tai Loi | | | | | |
| tlr | | | I/L | | | Talise | | | | | |
| tls | | | I/L | | | Tambotalo | | | | | |
| tlt | | | I/L | | | Teluti | | | | | |
| tlu | | | I/L | | | Tulehu | | | | | |
| tlv | | | I/L | | | Taliabu | | | | | |
| (tlw) | | | I/L | | | Wemale, South | | | | | |
| tlx | | | I/L | | | Khehek | | | | | Levei |
| tly | | | I/L | | толышә | Talysh | talysh | talish | | талышский | |
| (tlz) | | | I/L | | | Toala' | | | | | |
| tma | | | I/L | | | Tama (Chad) | | | | | |
| tmb | | | I/L | | | Katbol | | | | | |
| tmc | | | I/L | | | Tumak | | | | | |
| tmd | | | I/L | | | Haruai | | | | | |
| tme | | | I/E | | | Tremembé | | | | | |
| tmf | | | I/L | | | Toba-Maskoy | | | | | |
| tmg | | | I/E | | | Ternateño | | | | | |
| tmh | | tmh | M/L | | | Tamashek | tamacheq | | 塔马舍克语 | тамашек | |
| tmi | | | I/L | | | Tutuba | | | | | |
| tmj | | | I/L | | | Samarokena | | | | | |
| (tmk) | | | I/L | | | Tamang, Northwestern | | | | | |
| tml | | | I/L | | | Citak, Tamnim | | | | | |
| tmm | | | I/L | | | Tai Thanh | | | | | |
| tmn | | | I/L | | | Taman (Indonesia) | | | | | |
| tmo | | | I/L | | | Temoq | | | | | |
| (tmp) | | | I/L | | | Tai Mène | | | 傣曼语 | | |
| tmq | | | I/L | | | Tumleo | | | | | |
| tmr | | | I/E | | | Aramaic, Talmudic | | | | | |
| tms | | | I/L | | | Tima | | | | | |
| tmt | | | I/L | | | Tasmate | | | | | |
| tmu | | | I/L | | | Iau | | | | | |
| tmv | | | I/L | | | Tembo (Motembo) | | | | | |
| tmw | | | I/L | | | Temuan | | | | | |
| (tmx) | | | I/L | | | Tomyang | | | | | |
| tmy | | | I/L | | | Tami | | | | | |
| tmz | | | I/E | | | Tamanaku | | tamanaku | | | |
| tna | | | I/L | | | Tacana | | | | | |
| tnb | | | I/L | | | Tunebo, Western | | | | | |
| tnc | | | I/L | | | Tanimuca-Retuarã | | tanimuca-retuarã | | | |
| tnd | | | I/L | | | Tunebo, Angosturas | | | | | |
| (tne) | | | I/L | | | Kallahan, Tinoc | | | | | |
| (tnf) | | | I/L | | | Tangshewi | | | | | |
| tng | | | I/L | | | Tobanga | | | | | |
| tnh | | | I/L | | | Maiani | | | | | |
| tni | | | I/L | | | Tandia | | | | | |
| (tnj) | | | I/L | | | Tanjong | | | | | |
| tnk | | | I/L | | | Kwamera | | | | | |
| tnl | | | I/L | | | Lenakel | | | | ленакель | Lenakel |
| tnm | | | I/L | | | Tabla | | | | | |
| tnn | | | I/L | | | Tanna, North | | | | | |
| tno | | | I/L | | | Toromono | | | | | |
| tnp | | | I/L | | | Whitesands | | | | | |
| tnq | | | I/E | | | Taino | | | | | |
| tnr | | | I/L | | | Budik | | | | | |
| tns | | | I/L | | | Tenis | | | | | |
| tnt | | | I/L | | | Tontemboan | | | | тонтембоан | Tontemboanisch |
| tnu | | | I/L | | | Tay Khang | | | | | |
| tnv | | | I/L | | | Tangchangya | | | | | |
| tnw | | | I/L | | | Tonsawang | | | | | |
| tnx | | | I/L | | | Tanema | | | | | |
| tny | | | I/L | | | Tongwe | | | | тонгве | |
| tnz | | | I/L | | | Tonga (Thailand) | | | | | |
| tob | | | I/L | | | Toba | | | | | |
| toc | | | I/L | | | Totonac, Coyutla | | | | | |
| tod | | | I/L | | | Toma | | | | | |
| (toe) | | | I/E | | | Tomedes | | | | | |
| tof | | | I/L | | | Gizrra | | | | | |
| tog | | tog | I/L | | chiTonga | Tonga (Nyasa) | Tonga (Nyasa) | | | тонга (Ньяса) | |
| toh | | | I/L | | | Gitonga | | | | | |
| toi | | | I/L | | | Tonga (Zambia) | | | | | |
| toj | | | I/L | | | Tojolabal | | | | | |
| tok | | | I/C | | toki pona | Toki Pona | toki pona | toki pona | 道本语 | Токипона | Toki Pona |
| tol | | | I/E | | | Tolowa | tolowa | | | | |
| tom | | | I/L | | | Tombulu | | | | | |
| ton | to | ton | I/L | Austronesian | faka-Tonga | Tonga (Tonga Islands) | Tongan (Îles Tonga) | tongano | 汤加语; 东加语 | тонга (Тонга исландский) | Tongaisch |
| too | | | I/L | | | Totonac, Xicotepec De Juárez | | | | | |
| top | | | I/L | | | Totonac, Papantla | | totonaco de Papantla | | | |
| toq | | | I/L | | | Toposa | | | | | |
| tor | | | I/L | | | Banda, Togbo-Vara | | | | | |
| tos | | | I/L | | | Totonac, Highland | | | | | |
| (tot) | | | I/L | | | Patla-Chicontla Totonac | | | | | |
| tou | | | I/L | | | Tho | | | | | |
| tov | | | I/L | | | Taromi, Upper | | | | | |
| tow | | | I/L | | | Jemez | | | | | |
| tox | | | I/L | | | Tobian | | | | | Tobianisch |
| toy | | | I/L | | | Topoiyo | | | | | |
| toz | | | I/L | | | To | | | | | |
| tpa | | | I/L | | | Taupota | | | | | |
| tpc | | | I/L | | | Tlapanec, Azoyú | | | | | |
| tpe | | | I/L | | | Tippera | | | | | |
| tpf | | | I/L | | | Tarpia | | | | | |
| tpg | | | I/L | | | Kula | | | | | |
| tpi | | tpi | I/L | | Tok Pisin | Tok Pisin | tok pisin | | 托克皮辛语; 巴布亚皮钦语 | ток-писин | Tok Pisin |
| tpj | | | I/L | | | Tapieté | | tapieté | | | |
| tpk | | | I/E | | | Tupinikin | | tupinikin | | | |
| tpl | | | I/L | | | Tlapanec, Tlacoapa | | | | | |
| tpm | | | I/L | | | Tampulma | | | | | |
| tpn | | | I/E | | abáñe'enga | Tupinambá | | tupinambá | | | Tupinambá |
| tpo | | | I/L | | | Tai Pao | | | | | |
| tpp | | | I/L | | | Tepehua, Pisaflores | | tepehua de Pisaflores | | | |
| tpq | | | I/L | | | Tukpa | | | | | |
| tpr | | | I/L | | | Tuparí | | tuparí | | | |
| tpt | | | I/L | | | Tepehua, Tlachichilco | | tepehua de Tlachichilco | | | |
| tpu | | | I/L | | | Tampuan | | | | | |
| tpv | | | I/L | | | Tanapag | | | | | |
| (tpw) | | | I/E | | | Tupí | tupi | tupí | | | Tupí |
| tpx | | | I/L | | | Tlapanec, Acatepec | | | | | |
| tpy | | | I/L | | | Trumaí | | | | | |
| tpz | | | I/L | | | Tinputz | | | | | |
| tqb | | | I/L | | | Tembé | | tembé | | | |
| tql | | | I/L | | | Lehali | | | | | |
| tqm | | | I/L | | | Turumsa | | | | | |
| tqn | | | I/L | | | Tenino | | | | | |
| tqo | | | I/L | | | Toaripi | | | | | |
| tqp | | | I/L | | | Tomoip | | | | | |
| tqq | | | I/L | | | Tunni | | | | | |
| tqr | | | I/E | | | Torona | | | | | |
| tqt | | | I/L | | | Totonac, Ozumatlán | | | | | |
| tqu | | | I/L | | | Touo | | | | | |
| tqw | | | I/E | | | Tonkawa | | | | | |
| tra | | | I/L | | | Tirahi | | | | | |
| trb | | | I/L | | | Terebu | | | | | |
| trc | | | I/L | | | Triqui, Copala | | | | | |
| trd | | | I/L | | | Turi | | | | | |
| tre | | | I/L | | | Tarangan, East | | | | | |
| trf | | | I/L | | | Trinidadian Creole English | | | 特立尼达克里奥尔英语 | | |
| trg | | | I/L | | | Lishán Didán | | | | | |
| trh | | | I/L | | | Turaka | | | | | |
| tri | | | I/L | | | Trió | | | | | |
| trj | | | I/L | | | Toram | | | | | |
| trl | | | I/L | | | Traveller Scottish | | | | | |
| trm | | | I/L | | | Tregami | | | | | |
| trn | | | I/L | | | Trinitario | | | | | |
| tro | | | I/L | | | Naga, Tarao | | | | | |
| trp | | | I/L | | | Kok Borok | | | | | |
| trq | | | I/L | | | Triqui, San Martín Itunyoso | | | | | |
| trr | | | I/L | | | Taushiro | | | | | |
| trs | | | I/L | | | Triqui, Chicahuaxtla | | | | | |
| trt | | | I/L | | | Tunggare | | | | | |
| tru | | | I/L | | | Turoyo | | | 图罗尤语 | | |
| trv | | | I/L | Austronesian | Kari Seediq | Seediq | | | 賽德克語; 太魯閣語 | | Seediq |
| trw | | | I/L | | | Torwali | | | | | |
| trx | | | I/L | | | Tringgus | | | | | |
| try | | | I/E | | | Turung | | | 荼隆语 | | |
| trz | | | I/E | | | Torá | | toraz | | | |
| tsa | | | I/L | | | Tsaangi | | | | тсаанги | |
| tsb | | | I/L | | | Tsamai | | | | | |
| tsc | | | I/L | | | Tswa | | | | | |
| tsd | | | I/L | | | Tsakonian | | | | | |
| tse | | | I/L | | | Tunisian Sign Language | | | 突尼斯手语 | | |
| (tsf) | | | I/L | | | Tamang, Southwestern | | | | | |
| tsg | | | I/L | | | Tausug | | | | | |
| tsh | | | I/L | | | Tsuvan | | | | | |
| tsi | | tsi | I/L | | Sm’algyax̣ | Tsimshian | tsimshian | tsimshian | 钦西安语 | цимшиан | Tsimshian |
| tsj | | | I/L | | | Tshangla | tshangla | | 仓洛-门巴语; 仓洛语 | | |
| tsk | | | I/L | | | Tseku | | | | | |
| tsl | | | I/L | | | Ts'ün-Lao | | | | | |
| tsm | | | I/L | | | Turkish Sign Language | | | 土耳其手语 | | |
| tsn | tn | tsn | I/L | Niger–Congo | Setswana | Tswana | tswana | setsuana | 茨瓦纳语 | тсвана | Tsuana |
| tso | ts | tso | I/L | Niger–Congo | Xitsonga | Tsonga | tsonga | tsonga | 聪加语; 宗加语 | тсонга | Tsongaisch |
| tsp | | | I/L | | | Toussian, Northern | | | | | |
| tsq | | | I/L | | | Thai Sign Language | | | 泰国手语 | | |
| tsr | | | I/L | | | Akei | | | | | |
| tss | | | I/L | | | Taiwan Sign Language | | | 台湾手语 | | |
| tst | | | I/L | | | Tondi Songway Kiini | | | | | |
| tsu | | | I/L | | | Tsou | | | 邹语 | | Tsou |
| tsv | | | I/L | | | Tsogo | | | | тсого | |
| tsw | | | I/L | | | Tsishingini | | | | | |
| tsx | | | I/L | | | Mubami | | | | | |
| tsy | | | I/L | | | Tebul Sign Language | | | | | |
| tsz | | | I/L | | | Purepecha | | | | | |
| tta | | | I/E | | | Tutelo | tutelo | tutelo | | | |
| ttb | | | I/L | | | Gaa | | | | | |
| ttc | | | I/L | | | Tektiteko | | | | | |
| ttd | | | I/L | | | Tauade | | | | | |
| tte | | | I/L | | | Bwanabwana | | | | | |
| ttf | | | I/L | | | Tuotomb | | | | | |
| ttg | | | I/L | | | Tutong 2 | | | | | |
| tth | | | I/L | | | Ta'oih, Upper | | | | | |
| tti | | | I/L | | | Tobati | | | | | |
| ttj | | | I/L | Niger-Congo | Orutooro | Tooro | | | | | |
| ttk | | | I/L | | | Totoro | | | | | |
| ttl | | | I/L | | | Totela | | | | | |
| ttm | | | I/L | | | Tutchone, Northern | | | | | |
| ttn | | | I/L | | | Towei | | | | | |
| tto | | | I/L | | | Ta'oih, Lower | | | | | |
| ttp | | | I/L | | | Tombelala | | | | | |
| ttq | | | I/L | | تَمَاجِقْ | Tamajaq, Tawallammat | | | | | |
| ttr | | | I/L | | | Tera | | | | | |
| tts | | | I/L | | ภาษาอีสาน | Thai, Northeastern | | | 依善泰语 | | |
| ttt | | | I/L | | Tati, тати | Tat, Muslim | tat | | 塔特语 | | |
| ttu | | | I/L | | | Torau | | | | | |
| ttv | | | I/L | | | Titan | | | | | |
| ttw | | | I/L | | | Kenyah, Tutoh | | | | | |
| (ttx) | | | I/L | | | Tutong 1 | | | | | |
| tty | | | I/L | | | Sikaritai | | | | | |
| ttz | | | I/L | | | Tsum | | | | | |
| tua | | | I/L | | | Wiarumus | | | | | |
| tub | | | I/E | | | Tübatulabal | | | | | |
| 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 | | | | | |
| tvi | | | I/L | Afro-Asiatic | | Tulai | | | | | |
| 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 | Sino-Tibetan | 𗼇𗟲 | Tangut | tangoute | tangut | 西夏语 | тангутский | Tanguten |
| 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 | | | | | |
| tyy | | | I/L | Niger–Congo | | Tiyaa | | | | | |
| 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 | Talossan | talossien | talosano | 塔罗萨语 | талосский | Talossanisch |
| 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 | | | |