| Atlético Deportivo Olímpico | Copa Perú | — | — | Estadio Telmo Carbajo |
| Atlético Huracán de Moquegua | Copa Perú | — | 26 luglio 1958 | — |
| Atlético Mollendo | Copa Perú | — | — | — |
| Atlético Telmo Carbajo | Copa Perú | — | 16 novembre 1928 | Estadio Telmo Carbajo |
| Atlético Universidad | Copa Perú | — | 24 febbraio 1964 | Arequipa Stadium |
| Aurich–Cañaña | — | — | 1993 | Estadio Elías Aguirre |
| Aurora Basket Jesi | — | Jesi | 1966 | PalaTriccoli |
| Aurora Chancayllo | Copa Perú | — | 10 agosto 1931 | Estadio Rómulo Shaw Cisneros |
| Aurora Miraflores | Copa Perú | — | 2 gennaio 1958 | Manuel Bonilla Sports Complex |
| Austin FC | Major League Soccer | Austin | 2018 | Q2 Stadium |
| Auxilium Pallacanestro Torino | — | Torino | 1974 | Palazzetto dello Sport Gianni Asti |
| Ayacucho Fútbol Club | Campeonato Descentralizado | — | 1972 | Estadio Las Américas |
| Azzurro Napoli Basket 2013 | — | Napoli | 2013 | PalaBarbuto |
| Baltimore Bullets | National Basketball Association | Baltimora | 1944 | Baltimore Coliseum |
| Baltimore Colts | — | Baltimora | 1947 | — |
| Baltimore Orioles | Major League Baseball | — | 1894 | Sportsman's Park, Oriole Park at Camden Yards, Lloyd Street Grounds, Memorial Stadium |
| Baltimore Ravens | National Football League | Baltimora | 1996 | Memorial Stadium, M&T Bank Stadium |
| Barcelona de Surquillo | Copa Perú | — | 8 settembre 1975 | Estadio Nacional del Perú |
| Basket Agropoli | — | Agropoli | 1966 | — |
| Basket Anagni | — | — | — | — |
| Basket Barcellona | — | Barcellona Pozzo di Gotto | 1976 | — |
| Basket Bees Treviglio | — | — | — | — |
| Basket Biassono | — | Biassono | — | — |
| Basket Brescia | — | Brescia | 1957 | — |
| Basket Brescia Leonessa | Serie A | Brescia | 2009 | PalaLeonessa |
| Basket Casier | — | Casier | — | — |
| Basket Cavezzo | — | Cavezzo | 1978 | — |
| Basket Club Ferrara | — | Ferrara | 1999 | Palasport di Ferrara |
| Basket Club Valtarese 2000 | — | — | — | — |
| Basket Costa Catania | — | Catania | — | — |
| Basket Femminile Le Mura Lucca | — | Lucca | 2005 | — |
| Basket Femminile Livorno | — | Livorno | — | PalaMacchia |
| Basket Femminile Milano | — | Milano | — | — |
| Basket Femminile Pavia | — | — | — | — |
| Basket Foxes Giussano | — | Giussano | 1983 | — |
| Basket Livorno | — | Livorno | 1947 | — |
| Basket Lumezzane | — | Lumezzane | — | — |
| Basket Montichiari | — | — | — | — |
| Basket Palestrina 1962 | — | — | — | — |
| Basket Parma | — | Parma | 1962 | — |
| Basket Patavium | — | Padova | 1934 | — |
| Basket Ravenna Piero Manetti | — | Ravenna | 1984 | — |
| Basket Rimini Crabs | — | — | — | — |
| Basket San Salvatore Selargius | — | Selargius | — | — |
| Basket Torino | — | Torino | 2019 | Palazzetto dello Sport Gianni Asti |
| BC Roma | Serie A | — | 2026 | Palazzetto dello Sport |
| Bears Mestre | — | Mestre | — | — |
| Bella Esperanza | Copa Perú | — | 1915 | — |