| Venue | Location | Capacity | Opened | Sport |
|---|---|---|---|---|
| U.S. Bank Stadium | Minneapolis | 70,000 seats | July 22, 2016 | American football |
| UBS Arena | — | — | November 19, 2021 | ice hockey |
| UCLA Straus Stadium | Los Angeles | 5,800 seats | — | tennis |
| Union Base-Ball Grounds | Illinois | — | 1871 | — |
| United Center | Illinois | 23,500 seats | August 18, 1994 | basketball |
| University Hall Turf Field | Virginia | 2,500 seats | — | field hockey |
| University of Illinois Ice Arena | Champaign | 2,000 seats | 1931 | — |
| UPMC Park | Erie | 6,000 seats | June 20, 1995 | — |
| UW–Milwaukee Panther Arena | Milwaukee | 12,700 seats | April 9, 1950 | basketball, ice hockey |