| Teramo Basket | Serie A2 | Teramo | 1973 | PalaScapriano |
| Texas Rangers | Grandes Ligas de Béisbol | — | 1972 | Rangers Ballpark in Arlington |
| Toronto Arenas | — | — | 1917 | Mutual Street Arena |
| Toronto Blue Jays | Grandes Ligas de Béisbol | Toronto | 1977 | Rogers Centre |
| Toronto FC | Major League Soccer | Toronto | 2006 | BMO Field |
| Toronto Maple Leafs | — | — | 22 de noviembre de 1917 | Scotiabank Arena, Mutual Street Arena, Maple Leaf Gardens |
| Toronto Raptors | National Basketball Association | Toronto | 1995 | Rogers Centre, Scotiabank Arena |
| Toronto St. Patricks | — | — | — | Mutual Street Arena |
| Trapani Shark | Lega Basket Serie A | Trapani | 1964 | — |
| Tresinaro Basket Scandiano | — | — | — | — |
| U.C.C. | — | Casalpusterlengo | 1977 | PalaBanca |
| Umana Venezia | — | — | 1925 | — |
| Unione Cestistica Piacentina | — | Piacenza | 2003 | — |
| Unione Sportiva Basket Recanati | — | Recanati | 1982 | — |
| Unione Sportiva Corona | — | Cremona | — | — |
| Universitario de Trujillo | Copa Perú | — | 10 de julio de 1965 | Estadio Mansiche |
| Unión Alfonso Ugarte | Copa Perú | — | 2003 | Estadio Jorge Basadre |
| Unión Alto Huarca Espinar | Copa Perú | — | 2014 | — |
| Unión América | Copa Perú | — | — | Antiguo Estadio Nacional del Perú |
| Unión Buenos Aires | — | — | 1917 | Estadio Nacional del Perú |
| Unión Carbone | Liga Regional de Lima y Callao | — | octubre 1925 | Estadio Nacional del Perú |
| Unión Deportivo Ascensión | Copa Perú 2018 | — | 18 de julio de 1959 | — |
| Unión Mirave | Copa Perú | — | 1977 | Estadio Jorge Basadre |
| Unión Ocopilla | Copa Perú | — | — | Estadio Huancayo |
| Unión Pesquero | Copa Perú | — | — | — |
| Unión Salaverry | Copa Perú | — | 25 de mayo de 1939 | Estadio Mariano Melgar |
| Unión Sport Mina San Vicente | Copa Perú | — | junio 1970 | — |
| USE Basket Femminile Empoli | — | Empoli | 1912 | — |
| Utah Jazz | National Basketball Association | Salt Lake City | 1974 | Auditorio Municipal de Nueva Orleans, Louisiana Superdome, Loyola Field House, Delta Center, Salt Palace, Thomas & Mack Center |
| Utah Mammoth | — | — | 2024 | Delta Center |
| Vancouver Canucks | — | — | 1970 | Coliseo del Pacífico, Rogers Arena |
| Vancouver Grizzlies | National Basketball Association | — | 1995 | Rogers Arena |
| Vancouver Millionaires | — | — | 1911 | — |
| Vancouver Whitecaps | Major League Soccer | Vancouver | 2009 | Estadio BC Place, Empire Field |
| Vegas Golden Knights | — | Paradise | octubre 2017 | T-Mobile Arena |
| Velo Trapani | — | Trapani | — | — |
| Verga Palermo | — | — | — | — |
| Victoria Cougars | Pacific Coast Hockey Association, Western Canada Hockey League (1921–1926) | — | 1911 | — |
| Victoria Libertas Pesaro | Lega Basket Serie A | Pésaro | 1946 | Vitrifrigo Arena |
| Viola Reggio Calabria | — | Regio de Calabria | 1966 | PalaCalafiore |
| Virtus Basket Ariano | — | Ariano Irpino | — | — |
| Virtus Cagliari | — | Cagliari | — | — |
| Virtus Pallacanestro Bologna | Lega Basket Serie A | Bolonia | 1927 | Virtus Arena |
| Virtus Pallacanestro Imola | — | — | — | — |
| Virtus Siena | — | — | — | — |
| Virtus Viterbo | — | — | 1995 | — |
| Vis Fortitudo Pomezia | — | — | — | — |
| Washington Capitals | — | — | 1974 | Capital One Arena, Capital Centre |