Muhammad Ali
Boxer
Hank Aaron
Baseball player
Tenley Albright
Figure skater
Michelle Akers
Soccer player
Eddie Arcaro
Jockey
Jake Arrieta
Baseball player
Kareem Abdul-Jabbar
Basketball player
Luke Aikins
Skydiver
Polina Astakhova
Gymnast
Han Aiping
Badminton player
Bobby Allison
Driver (NASCAR)
Mao Asada
Figure skater
Sohail Abbas
Field hockey player
Andre Agassi
Tennis player
Fernando Alonso
Driver (F1)
Geno Atkins
Football player
Giacomo Agostini
Driver (MotoGP)
Saïd Aouita
Track and field athlete
Henry Armstrong
Boxer
Nikolai Andrianov
Gymnast