| Club | Liga | Sede | Fundación | Estadio |
|---|---|---|---|---|
| Giants Basket Marghera | — | Venecia | — | — |
| Gioiosa Milano | — | — | — | — |
| Giovanni Russo Cagliari | — | — | — | — |
| Golden State Warriors | National Basketball Association | San Francisco | 1946 | Philadelphia Arena, SAP Center, Philadelphia Convention Hall and Civic Center, Cow Palace, Oracle Arena, War Memorial Gymnasium, Bill Graham Civic Auditorium, Chase Center |
| Gruppo Universitario Fascista Agrigento | — | Agrigento | — | — |
| GS Trogylos Basket Priolo | — | Priolo Gargallo | 1970 | — |
| GSD Porto Torres | — | Porto Torres | 1996 | — |
| Guerino Vanoli Basket | Lega Basket Serie A | Cremona | 1999 | Palasport Mario Radi |