
| TAA | Tarapaina | Tarapaina | Solomon Islands |
| TAB | Tobago | Tobago | Trinidad and Tobago |
| TAC | Tacloban | D.Z. Romualdez | Philippines |
| TAD | Trinidad (CO) | Las Animas | USA |
| TAE | Daegu | Daegu International Airport | South Korea |
| TAF | Oran | Tafaraoui | Algeria |
| TAG | Panglao | Bohol International Airport | Philippines |
| TAH | Tanna | Tanna | Vanuatu |
| TAI | Taiz | Taiz International Airport (Al Janad) | Yemen |
| TAJ | Aitape | Tadji | Papua New Guinea |
| TAK | Takamatsu | Takamatsu | Japan |
| TAL | Tanana (AK) | Ralph Calhoun | USA |
| TAM | Tampico | Gen F Javier Mina | Mexico |
| TAN | Tangalooma | Tangalooma | Australia |
| TAO | Qingdao | Qingdao | PR China |
| TAP | Tapachula | International | Mexico |
| TAQ | Tarcoola | Tarcoola | Australia |
| TAR | Taranto | M. A. Grottag | Italy |
| TAS | Tashkent | Vostochny | Uzbekistan |
| TAT | Poprad/Tatry | Poprad/Tatry | Slovakia |
| TAU | Tauramena | Tauramena | Colombia |
| TAV | Tau | Tau | American Samoa |
| TAW | Tacuarembo | Tacuarembo | Uruguay |
| TAX | Taliabu | Taliabu | Indonesia |
| TAY | Tartu | Tartu | Estonia |
| TAZ | Dashoguz | Dashoguz | Turkmenistan |
| TBA | Tabibuga | Tabibuga | Papua New Guinea |
| TBB | Tuy Hoa | Tuy Hoa | Viet Nam |
| TBC | Tuba City (AZ) | Tuba City | USA |
| TBD | Timbiqui | Timbiqui | Colombia |
| TBE | Timbunke | Timbunke | Papua New Guinea |
| TBF | Tabiteuea North | Tabiteuea North | Kiribati |
| TBG | Tabubil | Tabubil | Papua New Guinea |
| TBH | Tablas | Tablas | Philippines |
| TBI | The Bight | The Bight | Bahamas |
| TBJ | Tabarka | Tabarka | Tunisia |
| TBK | Timber Creek | Timber Creek | Australia |
| TBL | Tableland | Tableland | Australia |
| TBM | Tumbang Samba | Tumbang Samba | Indonesia |
| TBN | Fort Leonard Wood (MO) | Forney AAF | USA |
| TBO | Tabora | Tabora | Tanzania |
| TBP | Tumbes | Tumbes | Peru |
| TBQ | Tarabo | Tarabo | Papua New Guinea |
| TBR | Statesboro (GA) | Municipal | USA |
| TBS | Tbilisi | Novo Alexeyevka | Georgia |
| TBT | Tabatinga | Internacional | Brazil |
| TBU | Nuku'Alofa | Fua'Amotu Internationa | Tonga |
| TBV | Tabal | Tabal | Marshall Islands |
| TBW | Tambov | Tambov | Russia |
| TBX | Taabo | Taabo | Cote d'Ivoire |
| TBY | Tsabong | Tsabong | Botswana |
| TBZ | Tabriz | Tabriz | Iran |
| TCA | Tennant Creek | Tennant Creek | Australia |
| TCB | Treasure Cay | Treasure Cay | Bahamas |
| TCC | Tucumcari (NM) | Tucumcari | USA |
| TCD | Tarapaca | Tarapaca | Colombia |
| TCE | Tulcea | Tulcea | Romania |
| TCF | Tocoa | Tocoa | Honduras |
| TCG | Tacheng | Tacheng | PR China |
| TCH | Tchibanga | Tchibanga | Gabon |
| TCI | Tenerife | Metropolitan Area | Canary Islands, Spain |
| TCJ | Torembi | Torembi Airport | Papua New Guinea |
| TCK | Tinboli | Tinboli Airport | Papua New Guinea |
| TCL | Tuscaloosa (AL) | Van De Graaf | USA |
| TCM | Tacoma (WA) | Mc Chord AFB | USA |
| TCN | Tehuacan | Tehuacan | Mexico |
| TCO | Tumaco | La Florida | Colombia |
| TCP | Taba | Taba International | Egypt |
| TCQ | Tacna | Tacna | Peru |
| TCR | Tuticorin | Tuticorin | India |
| TCS | Truth Or Consequences (NM) | Municipal | USA |
| TCT | Takotna (AK) | Takotna | USA |
| TCU | Thaba Nchu | Thaba Nchu | South Africa |
| TCV | Tete | Tete | Mozambique |
| TCW | Tocumwal | Tocumwal | Australia |
| TCX | Tabas | Tabas | Iran |
| TCY | Terrace Bay | Terrace Bay | Namibia |
| TDA | Trinidad | Trinidad | Colombia |
| TDB | Tetabedi | Tetabedi | Papua New Guinea |
| TDD | Trinidad | Trinidad | Bolivia |
| TDG | Tandag | Tandag | Philippines |
| TDJ | Tadjoura | Tadjoura | Djibouti |
| TDK | Taldy-Kurgan | Taldy-Kurgan | Kazakhstan |
| TDL | Tandil | Tandil | Argentina |
| TDN | Theda | Theda Station | Australia |
| TDO | Toledo (WA) | Winlock | USA |
| TDR | Theodore | Theodore | Australia |
| TDT | Tanda Tula | Tanda Tula | South Africa |
| TDV | Tanandava | Tanandava | Madagascar |
| TDW | Amarillo (TX) | Tradewind | USA |
| TDZ | Toledo (OH) | Toledo | USA |
| TEA | Tela | Tela | Honduras |
| TEB | Teterboro (NJ) | Teterboro | USA |
| TEC | Telemaco Borba | Telemaco Borba | Brazil |
| TED | Thisted | Thisted | Denmark |
| TEE | Tbessa | Tbessa | Algeria |
| TEF | Telfer | Telfer | Australia |
| TEG | Tenkodogo | Tenkodogo | Burkina Faso |
| TEH | Tetlin (AK) | Tetlin | USA |
| TEI | Tezu | Tezu | India |
| TEK | Tatitlek (AK) | Tatitlek | USA |
| TEL | Telupid | Telupid | Malaysia |
| TEM | Temora | Temora | Australia |
| TEN | Tongren | Tongren | PR China |
| TEO | Terapo | Terapo | Papua New Guinea |
| TEP | Teptep | Teptep | Papua New Guinea |
| TEQ | Tekirdag | Corlu | Turkey |
| TER | Terceira Island | Lajes | Portugal |
| TES | Tessenei | Tessenei | Eritrea |
| TET | Tete | Matunda | Mozambique |
| TEU | Te Anau | Manapouri | New Zealand |
| TEX | Telluride (CO) | Telluride | USA |
| TEY | Thingeyri | Thingeyri | Iceland |
| TEZ | Tezpur | Salonibari | India |
| TFB | Tifalmin | Tifalmin | Papua New Guinea |
| TFF | Tefe | Tefe | Brazil |
| TFI | Tufi | Tufi | Papua New Guinea |
| TFL | Teofilo Otoni | Teofilo Otoni | Brazil |
| TFM | Telefomin | Telefomin | Papua New Guinea |
| TFN | Tenerife | Norte Los Rodeos | Canary Islands, Spain |
| TFR | Ramadan | Ramadan | Egypt |
| TFS | Tenerife | Sur Reina Sofia | Canary Islands, Spain |
| TFT | Taftan | Taftan | Pakistan |
| TFY | Tarfaya | Tarfaya | Morocco |
| TGB | Tagbita | Tagbita | Philippines |
| TGD | Podgorica | Golubovci | Montenegro |
| TGE | Tuskegee (AL) | Sharpe Field | USA |
| TGF | Tignes | Tignes | France |
| TGG | Kuala Terengganu | Sultan Mahmood | Malaysia |
| TGH | Tongoa | Tongoa | Vanuatu |
| TGI | Tingo Maria | Tingo Maria | Peru |
| TGJ | Tiga | Tiga | New Caledonia |
| TGL | Tagula | Tagula | Papua New Guinea |
| TGM | Tirgu Mures | Tirgu Mures | Romania |
| TGN | Traralgon | La Trobe Regional | Australia |
| TGO | Tongliao | Tongliao | PR China |
| TGQ | Tangara da Serra | Tangara da Serra | Brazil |
| TGR | Touggourt | Touggourt | Algeria |
| TGS | Chokwe | Chokwe | Mozambique |
| TGT | Tanga | Tanga | Tanzania |
| TGU | Tegucigalpa | Toncontin | Honduras |
| TGV | Targovishte | Targovishte | Bulgaria |
| TGX | Tingrela | Tingrela | Cote d'Ivoire |
| TGZ | Tuxtla Gutierrez | Llano San Juan | Mexico |
| THA | Tullahoma (TN) | Northern | USA |
| THB | Thaba-Tseka | Thaba-Tseka | Lesotho |
| THC | Tchien | Tchien | Liberia |
| THE | Teresina | Senador Petronio Portella Airport | Brazil |
| THF | Berlin | Tempelhof (ceased operating in 2008) | Germany |
| THG | Thangool | Thangool | Australia |
| THH | Taharoa | Taharoa | New Zealand |
| THI | Tichitt | Tichitt | Mauritania |
| THK | Thakhek | Thakhek | Lao PDR |
| THL | Tachilek | Tachilek | Myanmar |
| THM | Thompsonfield (MO) | Thompsonfield | USA |
| THN | Trollhattan | Trollhattan | Sweden |
| THO | Thorshofn | Thorshofn | Iceland |
| THP | Thermopolis (WY) | Hot Springs | USA |
| THR | Tehran | Mehrabad | Iran |
| THS | Sukhothai | Sukhothai | Thailand |
| THT | Tamchakett | Tamchakett | Mauritania |
| THU | Pituffik | Pituffik | Greenland |
| THV | York (PA) | York | USA |
| THY | Thohoyandou | Thohoyandou | South Africa |
| THZ | Tahoua | Tahoua | Niger |
| TIA | Tirana | Rinas | Albania |
| TIB | Tibu | Tibu | Colombia |
| TIC | Tinak Island | Tinak Island | Marshall Islands |
| TID | Tiaret | Bouchekif | Algeria |
| TIE | Tippi | Tippi | Ethiopia |
| TIF | Taif | Taif | Saudi Arabia |
| TIG | Tingwon | Tingwon | Papua New Guinea |
| TIH | Tikehau Atoll | Tikehau Atoll | French Polynesia |
| TII | Tirinkot | Tirinkot | Afghanistan |
| TIJ | Tijuana | Rodriguez | Mexico |
| TIK | Oklahoma City (OK) | Tinker AFB | USA |
| TIL | Inverlake | Inverlake | Canada |
| TIM | Tembagapura | Timika | Indonesia |
| TIN | Tindouf | Tindouf | Algeria |
| TIO | Tilin | Tilin | Myanmar |
| TIP | Tripoli | International | Libya |
| TIQ | Tinian | Tinian | Northern Mariana Islands |
| TIR | Tirupati | Tirupati | India |
| TIS | Thursday Island | Thursday Island | Australia |
| TIU | Timaru | Timaru | New Zealand |
| TIV | Tivat | Tivat Airport | Montenegro |
| TIW | Tacoma (WA) | Industrial | USA |
| TIX | Titusville (FL) | Space Center Exect. | USA |
| TIY | Tidjikja | Tidjikja | Mauritania |
| TIZ | Tari | Tari | Papua New Guinea |
| TJA | Tarija | Tarija | Bolivia |
| TJB | Tanjung Balai | Tanjung Balai | Indonesia |
| TJC | Ticantiki | Ticantiki | Panama |
| TJG | Tanjung Warukin | Tanjung Warukin | Indonesia |
| TJH | Toyooka | Tajima | Japan |
| TJI | Trujillo | Capiro | Honduras |
| TJK | Tokat | Tokat | Turkey |
| TJM | Tyumen | Tyumen | Russia |
| TJN | Takume | Takume | French Polynesia |
| TJQ | Tanjung Pandan | Bulutumbang | Indonesia |
| TJS | Tanjung Selor | Tanjung Selor | Indonesia |
| TJV | Thanjavur | Thanjavur | India |
| TKA | Talkeetna (AK) | Talkeetna | USA |
| TKB | Tekadu | Tekadu | Papua New Guinea |
| TKC | Tiko | Tiko | Cameroon |
| TKD | Takoradi | Takoradi | Ghana |
| TKE | Tenakee Springs (AK) | Tenakee SPB | USA |
| TKF | Truckee (CA) | Truckee | USA |
| TKG | Bandar Lampung | Branti | Indonesia |
| TKH | Takhli | Takhli | Thailand |
| TKI | Tokeen (AK) | Tokeen | USA |
| TKJ | Tok (AK) | Tok | USA |
| TKK | Truk | Truk | Micronesia |
| TKL | Taku Lodge (AK) | Taku SPB | USA |
| TKM | Tikal | El Peten | Guatemala |
| TKN | Tokunoshima | Tokunoshima | Japan |
| TKO | Tlokoeng | Tlokoeng | Lesotho |
| TKP | Takapoto | Takapoto | French Polynesia |
| TKQ | Kigoma | Kigoma | Tanzania |
| TKR | Thakurgaon | Thakurgaon | Bangladesh |
| TKS | Tokushima | Tokushima | Japan |
| TKT | Tak | Tak | Thailand |
| TKU | Turku | Turku | Finland |
| TKV | Tatakoto | Tatakoto | French Polynesia |
| TKW | Tekin | Tekin | Papua New Guinea |
| TKX | Takaroa | Takaroa | French Polynesia |
| TKY | Turkey Creek | Turkey Creek | Australia |
| TKZ | Tokoroa | Tokoroa | New Zealand |
| TLA | Teller (AK) | Teller | USA |
| TLB | Tarbela | Tarbela | Pakistan |
| TLC | Toluca | Toluca | Mexico |
| TLD | Tuli Lodge | Tuli Lodge | Botswana |
| TLE | Tulear | Tulear | Madagascar |
| TLF | Telida (AK) | Telida | USA |
| TLG | Tulagi Island | Tulagi Island | Solomon Islands |
| TLH | Tallahassee (FL) | Municipal | USA |
| TLI | Tolitoli | Tolitoli | Indonesia |
| TLJ | Tatalina (AK) | Tatalina AFS | USA |
| TLK | Talknafjordur | Talknafjordur | Iceland |
| TLL | Tallinn | Ulemiste | Estonia |
| TLM | Tlemcen | Zenata | Algeria |
| TLN | Toulon | Hyeres | France |
| TLO | Tol | Tol | Papua New Guinea |
| TLP | Tumolbil | Tumolbil | Papua New Guinea |
| TLR | Tulare (CA) | Tulare | USA |
| TLS | Toulouse | Blagnac Airport | France |
| TLT | Tuluksak (AK) | Tuluksak | USA |
| TLU | Tolu | Tolu | Colombia |
| TLV | Tel Aviv - Yafo | Ben Gurion International | Israel |
| TLW | Talasea | Talasea | Papua New Guinea |
| TLX | Talca | Talca | Chile |
| TLZ | Catalao | Catalao | Brazil |
| TMA | Tifton (GA) | Henry Tift Myers | USA |
| TMB | Miami (FL) | Tamiami | USA |
| TMC | Tambolaka | Tambolaka | Indonesia |
| TMD | Timbedra | Timbedra | Mauritania |
| TME | Tame | Tame | Colombia |
| TMG | Tomanggong | Tomanggong | Malaysia |
| TMH | Tanahmerah | Tanahmerah | Indonesia |
| TMI | Tumling Tar | Tumling Tar | Nepal |
| TMJ | Termez | Termez | Uzbekistan |
| TMK | Tamky | Tamky | Viet Nam |
| TML | Tamale | Tamale | Ghana |
| TMM | Tamatave | Tamatave | Madagascar |
| TMN | Tamana Island | Tamana Island | Kiribati |
| TMO | Tumeremo | Tumeremo | Venezuela |
| TMP | Tampere | Tampere-Pirkkala | Finland |
| TMQ | Tambao | Tambao | Burkina Faso |
| TMR | Tamanrasset | Aguemar | Algeria |
| TMS | Sao Tome Island | Sao Tome | Sao Tome and Principe |
| TMT | Trombetas | Trombetas | Brazil |
| TMU | Tambor | Tambor | Costa Rica |
| TMW | Tamworth | Tamworth | Australia |
| TMX | Timimoun | Timimoun | Algeria |
| TMY | Tiom | Tiom | Indonesia |
| TMZ | Thames | Thames | New Zealand |
| TNA | Jinan | Jinan | PR China |
| TNB | Tanah Grogot | Tanah Grogot | Indonesia |
| TNC | Tin City (AK) | Tin City AFS | USA |
| TND | Trinidad | Trinidad | Cuba |
| TNE | Nakatane | New Tanegashima Airport | Japan |
| TNF | Toussus-le-Noble | Toussus-le-Noble | France |
| TNG | Tangier | Boukhalef | Morocco |
| TNH | Tonghua | Tonghua Liuhe | PR China |
| TNI | Satna | Satna | India |
| TNJ | Tanjung Pinang | Kidjang | Indonesia |
| TNK | Tununak (AK) | Tununak | USA |
| TNL | Ternopol | Ternopol | Ukraine |
| TNM | Teniente R. Marsh | Teniente R. Marsh | Antarctica |
| TNN | Tainan | Tainan | Taiwan |
| TNO | Tamarindo | Tamarindo | Costa Rica |
| TNP | Twentynine Palms (CA) | Twentynine Palms | USA |
| TNQ | Teraina | Teraina | Kiribati |
| TNR | Antananarivo | Antananarivo | Madagascar |
| TNS | Tungsten | Tungsten | Canada |
| TNT | Miami (FL) | Dade Collier | USA |
| TNU | Newton IA | Municipal | USA |
| TNV | Tabuaeran | Tabuaeran | Kiribati |
| TNX | Stung Treng | Stung Treng | Cambodia |
| TOA | Torrance (CA) | Torrance | USA |
| TOB | Tobruk | Tobruk | Libya |
| TOC | Toccoa (GA) | Toccoa | USA |
| TOD | Tioman | Tioman | Malaysia |
| TOE | Tozeur | Tozeur | Tunisia |
| TOF | Tomsk | Bogashevo Airport | Russia |
| TOG | Togiak Village (AK) | Togiak Airport | USA |
| TOH | Torres | Torres Airstrip | Vanuatu |
| TOI | Troy (AL) | Municipal | USA |
| TOJ | Madrid | Torrejon AFB | Spain |
| TOK | Torokina | Torokina | Papua New Guinea |
| TOL | Toledo (OH) | Express | USA |
| TOM | Tombouctou | Tombouctou | Mali |
| TON | Tonu | Tonu | Papua New Guinea |
| TOO | San Vito | San Vito | Costa Rica |
| TOP | Topeka (KS) | Philip Billard | USA |
| TOQ | Tocopilla | Barriles | Chile |
| TOR | Torrington (WY) | Municipal | USA |
| TOS | Tromso | Tromso/Langnes | Norway |
| TOT | Totness | Coronie | Suriname |
| TOU | Touho | Touho | New Caledonia |
| TOV | Tortola | West End SPB | British Virgin Islands |
| TOW | Toledo | Toledo | Brazil |
| TOX | Tobolsk | Tobolsk | Russia |
| TOY | Toyama | Toyama | Japan |
| TOZ | Touba | Touba | Cote d'Ivoire |
| TPA | Tampa (FL) | Tampa International | USA |
| TPC | Tarapoa | Tarapoa | Ecuador |
| TPE | Taipei | Taoyuan International Airport | Taiwan |
| TPF | Tampa (FL) | Peter O. Knight Airport | USA |
| TPG | Taiping | Taiping | Malaysia |
| TPH | Tonopah (NV) | Tonopah Airport | USA |
| TPI | Tapini | Tapini | Papua New Guinea |
| TPJ | Taplejung | Taplejung | Nepal |
| TPK | Tapaktuan | Tapaktuan | Indonesia |
| TPL | Temple (TX) | Draughon-Miller | USA |
| TPN | Tiputini | Tiputini | Ecuador |
| TPO | Tanalian Point (AK) | Tanalian Point | USA |
| TPP | Tarapoto | Tarapoto | Peru |
| TPQ | Tepic | Tepic | Mexico |
| TPR | Tom Price | Tom Price | Australia |
| TPS | Trapani | Birgi | Italy |
| TPT | Tapeta | Tapeta | Liberia |
| TPU | Tikapur | Tikapur | Nepal |
| TQN | Taluqan | Taluqan | Afghanistan |
| TQR | San Domino Island | San Domino Island | Italy |
| TQS | Tres Esquinas | Tres Esquinas | Colombia |
| TRA | Taramajima | Tarama | Japan |
| TRB | Turbo | Gonzalo | Colombia |
| TRC | Torreon | Torreon | Mexico |
| TRD | Trondheim | Vaernes | Norway |
| TRE | Tiree | Tiree | United Kingdom |
| TRF | Oslo | Sandefjord | Norway |
| TRG | Tauranga | Tauranga | New Zealand |
| TRH | Trona (CA) | Trona | USA |
| TRI | Bristol (VA) | Tri-Cities Regional | USA |
| TRI | Johnson City (TN) | Tri-Cities Regional | USA |
| TRI | Kingsport (TN) | Tri-Cities Regional | USA |
| TRJ | Tarakbits | Tarakbits | Papua New Guinea |
| TRK | Tarakan | Tarakan | Indonesia |
| TRL | Terrell (TX) | Terrell Field | USA |
| TRM | Thermal (CA) | Thermal | USA |
| TRN | Turin | Citta Di Torino | Italy |
| TRO | Taree | Taree | Australia |
| TRP | Tree Point (AK) | Coast Guard Heliport | USA |
| TRQ | Tarauaca | Tarauaca | Brazil |
| TRR | Trincomalee | China Bay | Sri Lanka |
| TRS | Trieste | Dei Legionari | Italy |
| TRT | Tremonton (UT) | Tremonton | USA |
| TRU | Trujillo | Trujillo | Peru |
| TRV | Thiruvananthapuram | International | India |
| TRW | Tarawa | Bonriki | Kiribati |
| TRX | Trenton (MO) | Memorial | USA |
| TRY | Tororo | Tororo | Uganda |
| TRZ | Tiruchirapally | Civil | India |
| TSA | Taipei | Sung Shan | Taiwan |
| TSB | Tsumeb | Tsumeb | Namibia |
| TSC | Taisha | Taisha | Ecuador |
| TSD | Tshipise | Tshipise | South Africa |
| TSE | Astana | Astana | Kazakhstan |
| TSF | Venice | Treviso | Italy |
| TSG | Tanacross (AK) | Intermediate | USA |
| TSH | Tshikapa | Tshikapa | Congo (DRC) |
| TSI | Tsili Tsili | Tsili Tsili | Papua New Guinea |
| TSJ | Tsushima | Tsushima | Japan |
| TSK | Taskul | Taskul | Papua New Guinea |
| TSL | Tamuin | Tamuin | Mexico |
| TSM | Taos (NM) | Taos | USA |
| TSN | Tianjin | Tianjin | PR China |
| TSO | Isles Of Scilly | Tresco | United Kingdom |
| TSP | Tehachapi (CA) | Kern County | USA |
| TSQ | Torres | Torres | Brazil |
| TSR | Timisoara | Timisoara | Romania |
| TSS | New York (NY) | East 34th St Heliport | USA |
| TST | Trang | Trang | Thailand |
| TSU | Tabiteuea South | Tabiteuea South | Kiribati |
| TSV | Townsville | Townsville | Australia |
| TSW | Tsewi | Tsewi | Papua New Guinea |
| TSX | Tanjung Santan | Tanjung Santan | Indonesia |
| TSY | Tasikmalaya | Tasikmalaya | Indonesia |
| TSZ | Tsetserleg | Tsetserleg | Mongolia |
| TTA | Tan Tan | Tan Tan | Morocco |
| TTB | Tortoli | Arbatax | Italy |
| TTC | Taltal | Taltal | Chile |
| TTD | Troutdale (OR) | Troutdale | USA |
| TTE | Ternate | Babullah | Indonesia |
| TTG | Tartagal | Tartagal | Argentina |
| TTH | Thumrait | Thumrait | Oman |
| TTI | Tetiaroa Is | Tetiaroa Is | French Polynesia |
| TTJ | Tottori | Tottori | Japan |
| TTK | Tottenham Hale Station | Tottenham Hale Station | United Kingdom |
| TTL | Turtle Island | Turtle Island | Fiji |
| TTM | Tablon De Tamara | Tablon De Tamara | Colombia |
| TTN | Trenton/Philadelphia (PA) | Trenton-Mercer | USA |
| TTO | Britton (SD) | Municipal | USA |
| TTQ | Tortuquero | Tortuquero | Costa Rica |
| TTR | Tana Toraja | Tana Toraja | Indonesia |
| TTS | Tsaratanana | Tsaratanana | Madagascar |
| TTT | Taitung | Taitung | Taiwan |
| TTU | Tetuan | Sania Ramel | Morocco |
| TUA | Tulcan | Tulcan | Ecuador |
| TUB | Tubuai | Tubuai | French Polynesia |
| TUC | Tucuman (Tucumán) | Benj Matienzo International | Argentina |
| TUD | Tambacounda | Tambacounda | Senegal |
| TUE | Tupile | Tupile | Panama |
| TUF | Tours | St Symphorien | France |
| TUG | Tuguegarao | Tuguegarao | Philippines |
| TUH | Tullahoma (TN) | Arnold AFS | USA |
| TUI | Turaif | Turaif | Saudi Arabia |
| TUJ | Tum | Tum | Ethiopia |
| TUK | Turbat | Turbat | Pakistan |
| TUL | Tulsa (OK) | International | USA |
| TUM | Tumut | Tumut | Australia |
| TUN | Tunis | Carthage | Tunisia |
| TUO | Taupo | Taupo | New Zealand |
| TUP | Tupelo (MS) | Lemons Municipal | USA |
| TUQ | Tougan | Tougan | Burkina Faso |
| TUR | Tucurui | Tucurui | Brazil |
| TUS | Tucson (AZ) | International | USA |
| TUT | Tauta | Tauta | Papua New Guinea |
| TUU | Tabuk | Tabuk | Saudi Arabia |
| TUV | Tucupita | Tucupita | Venezuela |
| TUW | Tubala | Tubala | Panama |
| TUX | Tumbler Ridge | Tumbler Ridge | Canada |
| TUY | Tulum | Tulum | Mexico |
| TUZ | Tucuma | Tucuma | Brazil |
| TVA | Morafenobe | Morafenobe | Madagascar |
| TVC | Traverse City (MI) | Traverse City | USA |
| TVF | Thief River Falls (MN) | Regional | USA |
| TVI | Thomasville (GA) | Municipal | USA |
| TVL | South Lake Tahoe (CA) | South Lake Tahoe | USA |
| TVU | Taveuni | Matei | Fiji |
| TVY | Dawe | Dawe | Myanmar |
| TWA | Twin Hills (AK) | Twin Hills | USA |
| TWB | Toowoomba | Toowoomba | Australia |
| TWD | Port Townsend (WA) | Port Townsend | USA |
| TWE | Taylor (AK) | Taylor | USA |
| TWF | Twin Falls (ID) | City County | USA |
| TWH | Catalina Island (CA) | Two Harbors | USA |
| TWN | Tewantin | Tewantin | Australia |
| TWP | Torwood | Torwood | Australia |
| TWT | Tawitawi | Tawitawi | Philippines |
| TWU | Tawau | Tawau | Malaysia |
| TWY | Tawa | Tawa | Papua New Guinea |
| TWZ | Mount Cook | Pukaki/Twizel | New Zealand |
| TXF | Teixeira de Freitas | Teixeira de Freitas | Brazil |
| TXG | Taichung | Taichung | Taiwan |
| TXK | Texarkana (AR) | Municipal | USA |
| TXL | Berlin | Tegel | Germany |
| TXM | Teminabuan | Teminabuan | Indonesia |
| TXN | Tunxi | Tunxi | PR China |
| TXR | Tanbar | Tanbar | Australia |
| TXU | Tabou | Tabou | Cote d'Ivoire |
| TYA | Tula | Tula | Russia |
| TYB | Tibooburra | Tibooburra | Australia |
| TYD | Tynda | Tynda | Russia |
| TYE | Tyonek (AK) | Tyonek | USA |
| TYF | Torsby | Torsby Airport | Sweden |
| TYG | Thylungra | Thylungra | Australia |
| TYL | Talara | Talara | Peru |
| TYM | Staniel Cay | Staniel Cay | Bahamas |
| TYN | Taiyuan | Taiyuan | PR China |
| TYO | Tokyo | Metropolitan Area | Japan |
| TYP | Tobermorey | Tobermorey | Australia |
| TYR | Tyler (TX) | Pounds Field | USA |
| TYS | Knoxville (TN) | Mc Ghee Tyson | USA |
| TYT | Treinta-y-Tres | Treinta-y-Tres | Uruguay |
| TYZ | Taylor (AZ) | Taylor | USA |
| TZA | Belize City | Municipal | Belize |
| TZL | Tuzla | Tuzla International | Bosnia and Herzegovina |
| TZM | Tizimin | Tizimin | Mexico |
| TZN | South Andros | South Andros | Bahamas |
| TZX | Trabzon | Trabzon | Turkey |