| Country | Diplomatic representation from the US |
| Tonga | the US does not have an embassy in Tonga; the US ambassador to Fiji is accredited to Tonga |
| Trinidad and Tobago | chief of mission: Ambassador Beatrice W. WELTERS embassy: 15 Queen's Park West, Port of Spain mailing address: P. O. Box 752, Port of Spain telephone: [1] (868) 622-6371 through 6376 FAX: [1] (868) 822-5905 |
| Tunisia | chief of mission: Ambassador Gordon GRAY embassy: Zone Nord-Est des Berges du Lac Nord de Tunis 1053 mailing address: use embassy street address telephone: [216] 71 107-000 FAX: [216] 71 963-263 |
| Turkey | chief of mission: Ambassador Francis J. RICCIARDONE, Jr. embassy: 110 Ataturk Boulevard, Kavaklidere, 06100 Ankara mailing address: PSC 93, Box 5000, APO AE 09823 telephone: [90] (312) 455-5555 FAX: [90] (312) 467-0019 consulate(s) general: Istanbul consulate(s): Adana; note - there is a Consular Agent in Izmir |
| Turkmenistan | chief of mission: Ambassador Eileen A. MALLOY embassy: No. 9 1984 Street (formerly Pushkin Street), Ashgabat, Turkmenistan 744000 mailing address: 7070 Ashgabat Place, Washington, DC 20521-7070 telephone: [993] (12) 35-00-45 FAX: [993] (12) 39-26-14 |
| Turks and Caicos Islands | none (overseas territory of the UK) |
| Tuvalu | the US does not have an embassy in Tuvalu; the US ambassador to Fiji is accredited to Tuvalu |
| Uganda | chief of mission: Ambassador Jerry P. LANIER embassy: 1577 Ggaba Road, Kampala mailing address: P. O. Box 7007, Kampala telephone: [256] (414) 259 791 through 93, 95 FAX: [256] (414) 258-794 |
| Ukraine |  chief of mission: Ambassador John F. TEFFT embassy: 4 Igor Sikorsky Street, 04112 Kyiv mailing address: 5850 Kyiv Place, Washington, DC 20521-5850 telephone: [380] (44) 521-5000 FAX: [380] (44) 521-5155 |
| United Arab Emirates | chief of mission: Ambassador Michael H. CORBIN embassy: Embassies District, Plot 38 Sector W59-02, Street No. 4, Abu Dhabi mailing address: P. O. Box 4009, Abu Dhabi telephone: [971] (2) 414-2200 FAX: [971] (2) 414-2603 consulate(s) general: Dubai |
| United Kingdom | chief of mission: Ambassador Louis B. SUSMAN embassy: 24 Grosvenor Square, London, W1A 1AE note - a new embassy is scheduled to open by the end of 2017 in the Nine Elms area of Wandsworth (architect Kiernan TIMBERLAKE) mailing address: PSC 801, Box 40, FPO AE 09498-4040 telephone: [44] (0) 20 7499-9000 FAX: [44] (0) 20 7629-9124 consulate(s) general: Belfast, Edinburgh |