| Partenope Napoli | — | Sant'Antimo | 1957 | — |
| PB63 Lady | — | — | 1963 | — |
| PCR Messina | — | Messina | — | — |
| Perugia Basket | — | — | — | — |
| Philadelphia 76ers | National Basketball Association | Philadelphia | 1946 | Xfinity Mobile Arena, Toyota Coliseum, Philadelphia Arena, Spectrum, Philadelphia Convention Hall and Civic Center, Oncenter War Memorial Arena |
| Phoenix Suns | National Basketball Association | Phoenix | 1968 | Arizona Veterans Memorial Coliseum, Mortgage Matchup Center |
| PMS Torino | Serie A | Turin | 2009 | — |
| Poderosa Pallacanestro Montegranaro | — | Montegranaro | 1993 | — |
| Polisportiva Cervia Milano Marittima | — | — | — | — |
| Polisportiva Dinamo | — | — | — | — |
| Portland Trail Blazers | National Basketball Association | Portland | 1970 | Veterans Memorial Coliseum, Moda Center |
| Progresso Castel Maggiore | — | Castel Maggiore | — | — |
| Raggisolaris Faenza | — | Faenza | — | — |
| RB Montecatini Terme | — | Montecatini Terme | 1949 | PalaTerme |
| Real Sebastiani Rieti | Serie A2 Basket | Rieti | 2020 | — |
| Reyer Venezia Mestre | Serie A | Venice | 1925 | Palasport Taliercio |
| Reyer Venezia Mestre Femminile | — | Venice | 1925 | — |
| Riviera Vado Basket | — | — | — | — |
| Robur Basket Osimo | — | Osimo | — | — |
| Robur et Fides Varese | — | Varese | — | — |
| Roseto Sharks | — | Roseto degli Abruzzi | 1946 | — |
| S.S. Felice Scandone | Serie B Dilettanti | Avellino | 1948 | Palasport Giacomo Del Mauro |
| Sacramento Kings | National Basketball Association | Sacramento | 1945 | ARCO Arena I, ARCO Arena, Golden 1 Center, Municipal Auditorium, Hy-Vee Arena, Omaha Civic Auditorium, Cincinnati Gardens, Edgerton Park Arena, Blue Cross Arena |
| San Antonio Spurs | National Basketball Association | — | 1967 | Alamodome, Kay Bailey Hutchison Convention Center, HemisFair Arena, Fort Worth Convention Center, Frost Bank Center, Moody Coliseum, Lubbock Municipal Coliseum |
| San Martino di Lupari | — | — | — | — |
| San Raffaele Basket | — | — | 1978 | — |
| Santa Marinella Basket | — | — | — | — |
| Scaligera Basket Verona | Serie A | Verona | 1951 | PalaOlimpia |
| Seattle SuperSonics | — | Washington | 1967 | Kingdome, Climate Pledge Arena, Tacoma Dome |
| Sebastiani Basket Club Rieti | — | — | — | — |
| Sheboygan Redskins | National Basketball Association | Sheboygan | 1938 | Playdium, Sheboygan Municipal Auditorium and Armory |
| Silver Basket Porto Torres | — | Porto Torres | — | — |
| Sisv Viterbo | — | Viterbo | — | — |
| Societa Veroli Basket | — | Frosinone | 1968 | — |
| Società Ginnastica Roma | — | — | — | — |
| Società Ginnastica Triestina | — | Trieste | 1930 | — |
| Sport Club Alcamo | — | Alcamo | — | — |
| SSD Santa Lucia Sport | — | Rome | 1978 | — |
| St. Louis Hawks | National Basketball Association | — | — | — |
| Starlight Valmadrera | — | — | — | — |
| Taranto Cras Basket | Lega Basket Femminile | Taranto | 1961 | — |
| Thunder Basket Matelica - Fabriano | — | — | — | — |
| Toronto Maple Leafs | — | — | November 22, 1917 | Scotiabank Arena, Mutual Street Arena, Maple Leaf Gardens |
| Toronto Raptors | National Basketball Association | Toronto | 1995 | Rogers Centre, Scotiabank Arena |
| Trapani Shark | Serie A | Trapani | 1964 | — |
| U.S. Sangiorgese | — | — | — | — |
| Umana Venezia | — | — | 1925 | — |
| Unicar Cesena | — | Cesena | — | — |