| 15 de Septiembre de Trujillo | Copa Perú | — | — | Estadio Mansiche |
| A.S.S.I. Basket 99 Cremona | — | — | — | — |
| Academia Deportiva Cantolao | Copa Perú | — | 2012 | Estadio Miguel Grau |
| AD Comerciantes FC | Segunda División | — | — | — |
| Alcides Vigo | Copa Perú | — | 1950 | — |
| Alfonso Ugarte de Chiclon | Copa Perú | — | 1917 | Estadio Mansiche |
| Alfonso Ugarte de Tacna | Copa Perú | — | — | Estadio Jorge Basadre |
| Alianza Cristiana | Segunda División | — | 14 aprile 2008 | Estadio Max Augustín |
| Alianza Frigorífico Nacional | — | — | — | Estadio Nacional del Perú |
| Alianza Huánuco | Segunda División | — | 1939 | Estadio Heraclio Tapia |
| Alianza Unicachi | Copa Perú | — | 2010 | Estadio Enrique Torres Belón |
| Alipio Ponce de Mazamari | Copa Perú | — | 21 giugno 1979 | — |
| Alma Basket Patti | — | — | 2012 | — |
| Alpo Basket '99 | — | Alpo | — | — |
| Ambrosiana Milano | — | Milano | — | — |
| Amici Pallacanestro Udinese | — | Udine | 1999 | — |
| Anaheim Ducks | — | — | 1993 | Honda Center |
| Ancona Basket | — | Ancona | — | — |
| Anderson Packers | National Basketball Association | Anderson | 1945 | Anderson High School Wigwam |
| Andrea Costa Imola | Serie A | Imola | 4 ottobre 1967 | — |
| Angels Santarcangelo | — | — | — | — |
| Aquila Basket Trento | Serie A | Trento | 1995 | BTS Arena |
| Arizona Cardinals | National Football League | — | 1920 | Comiskey Park, Wrigley Field, Busch Memorial Stadium, Soldier Field, State Farm Stadium, Sun Devil Stadium, Metropolitan Stadium, Sportsman's Park |
| Arizona Coyotes | — | Tempe, Glendale, Phoenix | 1972 | Jobing.com Arena, Phoenix Suns Arena, Mullett Arena |
| Arizona Diamondbacks | Major League Baseball | Phoenix | 1998 | Chase Field |
| ASD Briantea84 Cantù | — | Cantù | 1984 | — |
| Asociación Civil Real Atlético Garcilaso | Campeonato Descentralizado | — | 2009 | Estadio Garcilaso de la Vega |
| Asociación Deportiva Colegio Nacional Iquitos | Copa Perú | — | 1926 | Estadio Max Augustín |
| Asociación Deportiva Hospital | Copa Perú | — | 25 febbraio 1971 | Estadio Aliardo Soria Pérez |
| Asociación Deportiva San Agustín | Copa Perú | — | 9 agosto 1970 | Stadio nazionale del Perù |
| Asociación Deportiva Somos Aduanas | Copa Perú | — | 1995 | Estadio Miguel Grau |
| Asociación Deportiva Tarma | Copa Perú | — | 18 giugno 1929 | Union Tarma Stadium |
| Association Chorrillos | Copa Perú | — | — | Estadio Municipal de Chorrillos |
| Association Football Club | — | — | 20 maggio 1897 | Estadio Nacional del Perú |
| Associazione Basket Latina | — | Latina | — | — |
| Associazione Sportiva Junior Libertas Pallacanestro | — | Casale Monferrato | 1956 | — |
| Associazione Sportiva Luiss | — | — | — | — |
| Associazione Sportiva Vicenza | Serie A1 | Vicenza | 1958 | — |
| Astro Cagliari | — | — | — | — |
| Athletic Club José Pardo | Copa Perú | — | — | Estadio Max Augustín |
| Athletics | Major League Baseball | — | 1968 | Sutter Health Park |
| Atlanta Braves | Major League Baseball | — | 1871 | Truist Park, Milwaukee County Stadium, Fenway Park, Congress Street Grounds, Braves Field, Turner Field, Atlanta Fulton County Stadium, South End Grounds I |
| Atlanta Falcons | National Football League | Flowery Branch, Atlanta | 1966 | Georgia Dome, Mercedes-Benz Stadium |
| Atlanta Hawks | National Basketball Association | Atlanta | 1946 | Georgia Dome, State Farm Arena, UW–Milwaukee Panther Arena, Arena di St. Louis, Wharton Field House, Kiel Auditorium, McCamish Pavilion, Omni Coliseum |
| Atlanta United FC | Major League Soccer | Atlanta | 2014 | Mercedes-Benz Stadium, Bobby Dodd Stadium |
| Atlético Barrio Frigorífico | Copa Perú | — | — | — |
| Atlético Belén de Moyobamba | Copa Perú | — | 20 aprile 1960 | Estadio IPD de Moyobamba |
| Atlético Chalaco | Copa Perú | — | 1902 | Estadio Telmo Carbajo |