| Racing de Huamachuco | Copa Peru | — | 1946 | — |
| Raggisolaris Faenza | — | Faença | — | — |
| RB Montecatini Terme | — | Montecatini Terme | 1949 | PalaTerme |
| Real Salt Lake | Major League Soccer | Salt Lake City | 2005 | Rio Tinto Stadium |
| Real Sebastiani Rieti | Serie A2 | Rieti | 2020 | — |
| Red Bull New York | Major League Soccer | Harrison | 1995 | Giants Stadium, Red Bull Arena |
| Regatas Lima | Copa Peru | — | — | — |
| Reyer Venezia Mestre Femminile | — | Veneza | 1925 | — |
| Rinascita Basket Rimini | Serie A2 | Rimini | 1947 | Palasport Flaminio |
| Riva del Garda Basket | — | Riva del Garda | — | — |
| Riviera Vado Basket | — | — | — | — |
| Robur Basket Osimo | — | Osimo | — | — |
| Robur et Fides Varese | — | Varese | — | — |
| Roseto Sharks | — | Roseto degli Abruzzi | 1946 | — |