| Giants Basket Marghera | — | Veneza | — | — |
| Gioiosa Milano | — | — | — | — |
| Giovanni Russo Cagliari | — | — | — | — |
| Giuseppe Rescifina Messina | — | — | — | — |
| Golden State Warriors | National Basketball Association | São Francisco | 1946 | Philadelphia Arena, SAP Center, Philadelphia Convention Hall and Civic Center, Cow Palace, Oakland Arena, War Memorial Gymnasium, Bill Graham Civic Auditorium, Chase Center |
| Green Bay Packers | National Football League | — | 1919 | Lambeau Field |
| Grifone Catania | — | Catânia | — | — |
| Gruppo Sportivo Bernocchi | Serie A1 | Legnano | 1945 | — |
| Gruppo Universitario Fascista Agrigento | — | Agrigento | — | — |
| GSD Porto Torres | — | Porto Torres | 1996 | — |
| Guardia Republicana | Copa Peru | — | 1981 | Estádio Nacional do Peru |
| Guerino Vanoli Basket | Liga Italiana de Basquetebol | Cremona | 1999 | Palasport Mario Radi |
| Hamilton Tigers | — | — | 1920 | Barton Street Arena |
| Handicap Sport Varese | — | — | — | — |
| Hartford Whalers | — | — | 1972 | Matthews Arena |
| Hatria Basket | — | — | — | — |
| Hidroaviación | — | — | 1927 | Estádio Nacional do Peru |
| Hijos de Acosvinchos | Copa Peru | — | 1946 | Estádio Universidad San Marcos |
| Hijos de Yurimaguas | Copa Peru | — | 16 de março de 1967 | — |
| Houston Astros | Major League Baseball | Houston | 1962 | Daikin Park |
| Houston Dynamo | Major League Soccer | Houston | 2005 | Shell Energy Stadium |
| Houston Rockets | National Basketball Association | Houston | 1967 | Toyota Center, Lakewood Church Central Campus, Fertitta Center, Pechanga Arena |
| Houston Texans | National Football League | Houston | 2002 | Reliant Stadium |
| Huancayo Sporting Club | Copa Peru | — | — | Estádio Huancayo |
| Hungaritos Agustinos | Copa Peru | — | 5 de junho de 1954 | Estadio Max Augustín |
| IDUNSA | Segunda División (Campeonato Peruano de Futebol) | — | 2003 | Estádio Arequipa |
| Inclán Sport Club | Copa Peru | — | — | — |
| Independiente de Cañete | Copa Peru | — | — | — |
| Indiana Pacers | National Basketball Association | Indianápolis | 1967 | Gainbridge Fieldhouse, Corteva Coliseum, Market Square Arena |
| Indianapolis Colts | National Football League | Indianápolis | 1953 | Memorial Stadium, Lucas Oil Stadium, RCA Dome |
| Indianapolis Olympians | National Basketball Association | Indianápolis | 1949 | Hinkle Fieldhouse |
| International Marine Incorporated F.C. | Copa Peru | — | 1992 | Estadio Campeonísimo |
| Ivrea Basket Team | — | Ivrea | — | — |
| Jacksonville Jaguars | National Football League | — | 1995 | TIAA Bank Field |
| JesoloSandonà Basket | — | Jesolo | — | — |
| Jorge Chávez | — | — | — | Estadio Telmo Carbajo |
| Jorge Chávez No. 1 | — | — | 1910 | Estadio Nacional del Perú (1897) |
| José Carlos Mariategui | Copa Peru | — | 16 de julho de 1975 | Estadio Nacional del Perú (1897) |
| José Gálvez FBC | Campeonato Peruano de Futebol | — | 1951 | Estadio Manuel Rivera Sanchez |
| José María Arguedas de Andahuaylas | Copa Peru | — | 2004 | Estadio Los Chankas |
| Juan Aurich | — | — | 1996 | Estádio Elías Aguirre |
| Junior Casale Monferrato | — | Casale Monferrato | 1956 | — |
| Juvecaserta Basket | Liga Italiana de Basquetebol, Serie B | Castel Morrone | 1951 | PalaMaggiò |
| Juvenil Andino | Copa Peru | — | 11 de agosto de 1932 | — |
| Juvenil Los Ángeles | Copa Peru | — | 1958 | — |
| Juvenilia Reggio Emilia | — | Reggio Emilia | — | — |
| Juventud Barranco | Copa Peru | — | 26 de janeiro de 1963 | Estadio Segundo Aranda Torres |
| Juventud La Joya | Copa Peru | — | — | Estadio Rómulo Shaw Cisneros |