| Union Hall, University of Adelaide | Union Hall, University of Adelaide | Australia, Adelaide, North Terrace | 1960-08-31 | 1960-11-26 | 1960 | 2 | |
| USF Verftet | USF Verftet | Norway, Bergen, Georgernes Verft 12 | 1985-03-28 | 2011-07-09 | 1985–2011 | 8 | |
| Ullensaker | Ullensaker | Norway, Ullensaker | 2005-04-06 | -- | 2005 | 1 | |
| Union Theatre | Union Theatre | United States, Missoula | 1909-01-14 | 1909-01-14 | 1909 | 1 | |
| Uleåborg Teater | Uleåborg Teater | Finland, Uleåborg (Oulu) | 1880-08-13 | 1885-11-08 | 1880–1885 | 2 | |
| Université Inter-Âges | Université Inter-Âges | France, Versailles, 6 impasse des gendarmes | 2019-06-20 | -- | 2019 | 1 | |
| University Theatre | University Theatre | United States, Washington D.C., The Catholic University of America | 1965-03-19 | 1965-04-03 | 1965 | 1 | |
| University Theatre, Bascom Hall | University Theatre, Bascom Hall | United States, Madison | 1935-11-04 | -- | 1935 | 2 | |
| Umělecká beseda na Malé straně | Umělecká beseda na Malé straně | Czech Republic, Prague | 1936-03-11 | -- | 1936 | 1 | |
| Ungdomsmötet i Karlskoga | Ungdomsmötet i Karlskoga | Sweden, Karlskoga | 1911-06-25 | -- | 1911 | 1 | |
| University Theatre, University of Calgary | The University Theatre, University of Calgary | Canada, Calgary | 1970-02-11 | 1970-02-15 | 1970 | 1 | |
| Usine C | Usine C | Canada, Montréal, 1345 Avenue Lalonde | 2003-09-02 | 2003-09-13 | 2003 | 1 | |
| Umeå | Umeå | Sweden, Umeå | 1990-10-26 | 1990-10-27 | 1990 | 1 | |
| Uleåborg | Uleåborg | Finland, Uleåborg | 1897-03-05 | -- | 1897 | 1 | |
| Upsala Teater | Upsala Teater | Sweden, Uppsala | 1871-11-21 | 1905-03-16 | 1871–1905 | 9 | |
| Unitarian Assembly Theatre | Unitarian Assembly Theatre | United States, Minneapolis | 1928-12-12 | 1928-12-13 | 1928–1934 | 3 | |
| University of Iowa Theatre Department | University of Iowa Theatre Department | United States, Iowa City, 200 N Riverside Dr | 2006-09-16 | 2006-09-17 | 2006 | 1 | |
| UNRWA School | UNRWA School | Palestinian Territories, Jenin | 2008-10-09 | -- | 2008 | 1 | |
| Ungdommens hus | Ungdommens hus | Norway, Tromsø | 1994-03-23 | -- | 1994 | 1 | |
| Utica | Utica | United States, Utica | 1903-10-08 | 1903-10-08 | 1903 | 1 | |
| Upper Yarra Arts Centre | Upper Yarra Arts Centre | Australia, Warburton, 3409 Warburton Hwy | 2001-03-31 | 2001-08-25 | 2001 | 2 | |
| Ufa-Theater Friedrichstrasse | Ufa-Theater Friedrichstrasse | Germany, Berlin, Friedrichstrasse 180 | 1935-12-21 | -- | 1935 | 1 | |
| Ukkel | Ukkel | Belgium, Ukkel | -- | -- | | | |
| Utstillingshallen | Utstillingshallen | Norway, Molde | 1952-03-03 | -- | 1952–1956 | 3 | |
| United States | United States | United States, United States | 1911-05-02 | 1952-03-09 | 1911–2017 | 46 | |
| Ulefoss skole | Ulefoss skole | Norway, Ulefoss, Nome | 2006-09-21 | -- | 2006 | 1 | |
| Union, Théâtre de l' | Théâtre de l'Union | France, Limoges, 20 Rue des Coopérateurs | 2012-10-22 | 2012-10-23 | 2012 | 1 | |
| University of Victoria | University of Victoria | Canada, Victoria, 3800 Finnerty Rd | 2002-03-14 | 2002-03-30 | 2002 | 1 | |
| University Theatre, Indiana University | University Theatre, Indiana University | United States, Bloomington, 275 North Jordan Avenue | 1963-11-04 | 2019-11-17 | 1963–2019 | 5 | |
| Ungdomsmötet Amundön | Ungdomsmötet Amundön | Sweden, Göteborg | 1911-07-16 | -- | 1911 | 1 | |
| Umělecká beseda na Malé straně | Umělecká beseda na Malé straně | Czech Republic, Prague | 1940-11-16 | -- | 1940 | 1 | |
| Ulvik | Ulvik | Norway, Ulvik | 1951-04-28 | -- | 1951 | 1 | |
| Universitetet i Urbygningen | Universitetet i Urbygningen | Norway, Oslo, Karl Johans gate 47 | 1990-09-07 | 1990-09-14 | 1990–2006 | 3 | |
| Üçüncü Tiyatro | Üçüncü Tiyatro (Uucncu Tiyatro) | Turkey, ULUS / ANKARA, İstiklal Cad. Çirmen Sokak Vakıf Apt. No:8 | -- | -- | | | |
| University Theatre, University of California | University Theatre, University of California | United States, Davis | 1979-03-15 | 1981-05-30 | 1979–1981 | 2 | |
| Unterländische Volksbühne Bruchsal | Unterländische Volksbühne Bruchsal | Germany, Bruchsal | 1954-09-15 | -- | 1954 | 1 | |
| University of Waterloo | University of Waterloo | Canada, Waterloo, 200 University Ave W | 1963-10-22 | -- | 1963 | 1 | |
| Ustinov Studio | Ustinov Studio | England, Bath, Sawclose, (Behind the Theatre Royal) | 1999-07-01 | 1999-07-03 | 1999 | 1 | |
| Uggdal i Tysnes | Uggdal i Tysnes | Norway, Uggdal i Tysnes | 2009-07-12 | -- | 2009 | 1 | |
| Union Theatre | Union Theatre | United States, Bakersfield | 1908-06-27 | 1908-06-27 | 1908 | 1 | |
| Utrechtse School, De | De Utrechtse School | Netherlands, Utrecht, Boorstraat 107 | 1994-12-17 | -- | 1994 | 1 | |
| Ufimskij ruskii dramatičeskij teatr | Ufimskij ruskii dramatičeskij teatr | Russia, Ufa | 1964-11- | -- | 1964 | 1 | |
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