| Pallalcesto Amatori Udine | inactivo | Údine | 1944 | Palasport Primo Carnera |
| Palmares Catania | — | Catania | — | — |
| Pantere Basket Femminile | — | — | — | — |
| PB63 Lady | — | — | 1963 | — |
| Pescara Basket | Serie C (Italian men's basketball league) | Pescara | — | PalaElettra |
| PF Schio | — | Schio | 1973 | — |
| PF Umbertide | — | Umbertide | 2008 | — |
| Philadelphia Athletics | — | — | 1901 | — |
| Philadelphia Eagles | National Football League | Filadelfia | 1933 | Lincoln Financial Field |
| Philadelphia Flyers | — | — | 1967 | The Spectrum, Xfinity Mobile Arena |
| Philadelphia Phillies | Grandes Ligas de Béisbol | Filadelfia | 1883 | Citizens Bank Park |
| Philadelphia Union | Major League Soccer | Chester | 2008 | Subaru Park |
| Phoenix Suns | National Basketball Association | Phoenix | 1968 | Arizona Veterans Memorial Coliseum, Footprint Center |
| Pirata Fútbol Club | Primera División del Perú | — | 15 de noviembre de 2015 | Estadio Francisco Mendoza Pizarro |
| Pistoia Basket 2000 | Lega Basket Serie A | Pistoya | 2000 | PalaFermi |
| Pittsburgh Penguins | — | — | 1967 | Pittsburgh Civic Arena, PPG Paints Arena |
| Pittsburgh Pirates | Grandes Ligas de Béisbol | Pittsburgh | 1887 | Recreation Park, Exposition Park, Three Rivers Stadium, Forbes Field, PNC Park |
| Pittsburgh Steelers | National Football League | Pittsburgh | 1933 | Acrisure Stadium, Three Rivers Stadium |
| Polisportiva Cervia Milano Marittima | — | — | — | — |
| Polisportiva Dinamo | — | — | — | — |
| Polisportiva Dinamo Lab | — | — | — | — |
| Portland Timbers | Major League Soccer | Portland | 2009 | Providence Park |
| Portland Trail Blazers | National Basketball Association | Portland | 1970 | Veterans Memorial Coliseum, Moda Center |
| Porvenir Miraflores | Copa Perú | — | 29 de mayo de 1922 | Estadio Nacional del Perú |
| Potenza 84 | — | Potenza | — | — |
| Progresso Castel Maggiore | — | Castel Maggiore | — | — |
| Quebec Bulldogs | — | — | 1888 | Quebec Skating Rink |
| Racing Club de Huamachuco | Copa Perú | — | 1946 | — |
| Raggisolaris Faenza | — | Faenza | — | — |
| Real Salt Lake | Major League Soccer | Salt Lake City | 2005 | America First Field |
| Real Sebastiani Rieti | Serie A2 | Rieti | 2020 | — |
| Reales de Kansas City | Grandes Ligas de Béisbol | — | 1969 | Kauffman Stadium |
| Red Bull New York | Major League Soccer | Harrison | 1995 | Giants Stadium, Sports Illustrated Stadium |
| Reyer Venezia Mestre | Lega Basket Serie A | Venecia | 1925 | Palasport Taliercio |
| Riva del Garda Basket | — | Riva del Garda | — | — |
| Robur et Fides Varese | — | Varese | — | — |
| Roseto Sharks | — | Roseto degli Abruzzi | 1946 | — |
| Rovereto Basket | — | Rovereto | — | — |
| Ruvo di Puglia Basket | — | — | — | — |
| S.S. Basket Napoli | — | Nápoles | 1946 | PalaBarbuto |
| Sacramento Kings | National Basketball Association | Sacramento | 1945 | ARCO Arena I, Power Balance Pavilion, Golden 1 Center, Municipal Auditorium, Kemper Arena, Omaha Civic Auditorium, Cincinnati Gardens, Edgerton Park Arena, Blue Cross Arena |
| Saetas de Oro | Copa Perú | — | — | — |
| Saint Louis Blues | — | — | 1967 | Enterprise Center |
| Saint Louis Cardinals | Grandes Ligas de Béisbol | — | 1882 | Busch Stadium |
| Salerno Basket 92 | — | — | — | — |
| San Diego FC | Major League Soccer | San Diego | 18 de mayo de 2023 | Snapdragon Stadium |
| San Francisco 49ers | National Football League | — | 1946 | Levi's Stadium |
| San Francisco Gigantes | Grandes Ligas de Béisbol | San Francisco | 1883 | Oracle Park |