| Under Bredesøylen i Mesnaelva | Under Bredesøylen i Mesnaelva | Norway, Lillehammer | 2006-03-02 | 2006-03-04 | 2006 | 1 | |
| Umstead Park UCC | Umstead Park UCC | United States of America, Raleigh, 8208 Brownleigh Dr | 2018-10-19 | 2018-10-28 | 2018 | 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 | |
| Utrechtse School, De | De Utrechtse School | Netherlands, Utrecht, Boorstraat 107 | 1994-12-17 | -- | 1994 | 1 | |
| University of North Carolina | University of North Carolina | United States of America, Chapel Hill, 209 South Road | 1920-11-20 | 1921-11-19 | 1920–1921 | 2 | |
| University of Waterloo | University of Waterloo | Canada, Waterloo, 200 University Ave W | 1963-10-22 | -- | 1963 | 1 | |
| Uppsala | Uppsala | Sweden, Uppsala | 1911-07-11 | 1911-07-12 | 1911–1952 | 4 | |
| Ushigome, Koto Engekikan Hall | Ushigome, Koto Engekikan Hall (Ushigome High Performing Arts Center) | Japan, Tokyo | 1912-01-30 | 1912-01-31 | 1912 | 1 | 1 |
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