[US Consulate General]
Thurston Island Antarctica
Tibet (Xizang) China
Tbilisi Georgia
Tierra del Fuego Argentina; Chile
Tijuana [US Consulate General] Mexico
Timor Indonesia
Timor Sea Indian Ocean
Tinian Northern Mariana Islands
Tiran, Strait of Indian Ocean
Tobago Trinidad and Tobago
Tokyo [US Embassy] Japan
Tonkin, Gulf of Pacific Ocean
Toronto [US Consulate General] Canada
Torres Strait Pacific Ocean
Toshkent (Tashkent) Uzbekistan
Trans-Jordan Jordan
Transkei South Africa
Transylvania Romania
Trieste [US Consular Agency] Italy
Trindade, Ilha de Brazil
Tripoli [US post not maintained, Libya
representation by Belgian
Embassy]
Tristan da Cunha Group Saint Helena
Trobriand Islands Papua New Guinea
Trucial States United Arab Emirates
Truk Islands Micronesia
Tsugaru Strait Pacific Ocean
Tuamotu Islands (Iles Tuamotu) French Polynesia
Tubuai Islands (Iles Tubuai) French Polynesia
Tunis [US Embassy] Tunisia
Turin [US Consulate] Italy
Turkish Straits Atlantic Ocean
Turkmeniya Turkmenistan
Turks Island Passage Atlantic Ocean
Tyrol, South Italy
Tyrrhenian Sea Atlantic Ocean

Udorn [US Consulate] Thailand
Ulaanbaatar Mongolia
Ullung-do Korea, South
Unimak Pass [strait] Pacific Ocean
Union of Soviet Socialist Armenia, Azerbaijan, Byelarus, Estonia,
Republics Georgia, Kazakhstan, Kyrgyzstan,
Latvia, Lithuania, Moldova, Russia,
Tajikistan, Turkmenistan, Ukraine,
Uzbekistan
United Arab Republic Egypt; Syria
Upper Volta Burkina
USSR Armenia, Azerbaijan, Byelarus, Estonia,
Georgia, Kazakhstan, Kyrgyzstan,
Latvia,