| Újpest | Újpest | Hungary, Budapest, Újpest | 1912-11-01 | -- | 1912–1913 | 2 | |
| Uusi Teatteri | Uusi Teatteri | Sweden, Stockholm, Västmannagatan 56 | 1898-- | -- | 1898–1916 | 2 | |
| Undermain Theatre | Undermain Theatre | United States of America, Dallas, 3200 Main St | 2018-11-07 | 2021-06-13 | 2018–2021 | 2 | |
| Union Theatre | Union Theatre | England, London, 204 Union St | 2003-03-25 | 2019-02-02 | 2003–2019 | 2 | |
| Uleåborg | Uleåborg | Finland, Uleåborg | 1897-03-05 | -- | 1897 | 1 | |
| University of Southern Maine | University of Southern Maine | United States of America, Gorham | 1986-04-11 | 1986-04-12 | 1986 | 1 | |
| University of Montana | University of Montana | United States of America, Missoula, 32 Campus Drive | 1972-10-21 | 1972-10-24 | 1972 | 1 | |
| University of Utah | University of Utah | United States of America, Salt Lake City, Presidents Circle | 1909-11-23 | 1909-11-23 | 1909 | 1 | |
| Ungdommens hus | Ungdommens hus | Norway, Tromsø | 1994-03-23 | -- | 1994 | 1 | |
| Universitetsbiblioteket i Oslo (UiO) | Universitetsbiblioteket i Oslo (UiO) | Norway, Oslo, Moltke Moes vei 39 | 2008-02-29 | -- | 2008 | 1 | |
| University Workshop Theatre, Louisiana State University | University Workshop Theatre, Louisiana State University | United States of America, Baton Rouge | 1947-04-24 | 1947-04-26 | 1947 | 1 | |
| University Theatre, University of Arizona | University Theatre, University of Arizona (University Theatre) | United States of America, Tucson | 1963-04-30 | 1963-05-04 | 1963 | 1 | |
| Ulefoss skole | Ulefoss skole | Norway, Ulefoss, Nome | 2006-09-21 | -- | 2006 | 1 | |
| Ungdomsmötet Amundön | Ungdomsmötet Amundön | Sweden, Göteborg | 1911-07-16 | -- | 1911 | 1 | |
| University Theatre | University Theatre | United States of America, Sacramento, 6000 J Street Shasta Hall | 2004-11-05 | 2004-11-14 | 2004 | 1 | |
| Ukranian Orthodox Centre | Ukranian Orthodox Centre | Canada, Kamloops | 1978-01-31 | -- | 1978 | 1 | |
| University Auditorium, Nnamdi Azikiwe University | University Auditorium, Nnamdi Azikiwe University | Nigeria, Awaka | 2002-09-11 | 2002-09-11 | 2002 | 1 | |
| UIC Theatre | UIC Theatre | United States of America, Chicago, 1044 W Harrison St | 2010-10-01 | 2010-10-10 | 2010 | 1 | |
| Uddevalla | Uddevalla | Sweden, Uddevalla | 1991-04-02 | 1991-04-03 | 1991 | 1 | |
| Ungdomshuset | Ungdomshuset | Norway, Fiskåbygd | 1952-03-01 | -- | 1952 | 1 | |
| University of Texas, The | The University of Texas | United States of America, Austin, 1 University Station | 1911-02-01 | 1911-02-01 | 1911 | 1 | |
| Uggdal i Tysnes | Uggdal i Tysnes | Norway, Uggdal i Tysnes | 2009-07-12 | -- | 2009 | 1 | |
| Umstead Park UCC | Umstead Park UCC | United States of America, Raleigh, 8208 Brownleigh Dr | 2018-10-19 | 2018-10-28 | 2018 | 1 | |
| Ungdomsmötet i Lidköping | Ungdomsmötet i Lidköping | Sweden, Lidköping | 1911-06-23 | -- | 1911 | 1 | |
| Université Populaire du Faubourg Saint-Antoine | Université Populaire du Faubourg Saint-Antoine | France, Paris, 157 rue du Faubourg Saint-Antoine | 1908-10-04 | -- | 1908 | 1 | |
| University Auditorium | University Auditorium | United States of America, Columbia, Columbia | 1920-04-05 | -- | 1920 | 1 | |
| Universidad Nacional Autónoma de México | Universidad Nacional Autónoma de México (UNAM) | Mexico, Ciudad de México, Av Universidad 3000, Copilco Universidad, Coyoacán. | 1976-03-16 | -- | 1976 | 1 | |
| Unitarian Parish House | Unitarian Parish House | United States of America, Anaconda | 1910-05-25 | 1910-05-25 | 1910 | 1 | |
| Ural'sk | Ural'sk | Russia, Ural'sk | -- | -- | | 1 | |
| University Theatre | University Theatre | United States of America, Washington D.C., The Catholic University of America | 1965-03-19 | 1965-04-03 | 1965 | 1 | |
| Under Bredesøylen i Mesnaelva | Under Bredesøylen i Mesnaelva | Norway, Lillehammer | 2006-03-02 | 2006-03-04 | 2006 | 1 | |
| Université Cheikh-Anta-Diop | Université Cheikh-Anta-Diop | Senegal, Dakar | 2021-05-25 | -- | 2021 | 1 | |
| Usine C | Usine C | Canada, Montréal, 1345 Avenue Lalonde | 2003-09-02 | 2003-09-13 | 2003 | 1 | |
| University Playhouse, Kansas City | University Playhouse, Kansas City | United States of America, Kansas City, Rockhill Road | 1974-08-08 | -- | 1974 | 1 | |
| University of Iowa Theatre Department | University of Iowa Theatre Department | United States of America, Iowa City, 200 N Riverside Dr | 2006-09-16 | 2006-09-17 | 2006 | 1 | |
| Ungarns ambassade | Ungarns ambassade | Norway, Oslo, Sophus Lies gate 3 | 1992-- | 1993-- | 1992 | 1 | |
| University of South Florida | University of South Florida | United States of America, Tampa, 3837 USF Holly Drive | 2018-01-11 | 2018-01-28 | 2018 | 1 | |
| UNRWA School | UNRWA School | Palestinian Territories, Jenin | 2008-10-09 | -- | 2008 | 1 | |
| Ulefoss samfunnshus | Ulefoss samfunnshus | Norway, Nome, Ulefossgata 2 | 1997-10-16 | -- | 1997 | 1 | |
| Union Theatre | Union Theatre | United States of America, Missoula | 1909-01-14 | 1909-01-14 | 1909 | 1 | |
| Université Inter-Âges | Université Inter-Âges | France, Versailles, 6 impasse des gendarmes | 2019-06-20 | -- | 2019 | 1 | |
| University of Victoria | University of Victoria | Canada, Victoria, 3800 Finnerty Rd | 2002-03-14 | 2002-03-30 | 2002 | 1 | |
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