Abdul Ahad Mohmand
Abdulmohsen Al-Bassam
Aidyn Aimbetov
Akihiko Hoshide
Alan Bean
Alan G. Poindexter
Alan Shepard
Albert H. Crews
Albert Sacco
Albert Scott Crossfield
Aleksandr Aleksandrovich Volkov
Aleksandr Ivanchenkov
Aleksandr Kaleri
Aleksandr Lazutkin
Aleksandr Panayotov Aleksandrov
Aleksandr Pavlovich Aleksandrov
Aleksandr Samokutyayev
Aleksandr Serebrov
Aleksandr Skvortsov (cosmonaut)
Aleksandr Viktorenko
Aleksei Gubarev
Aleksei Yeliseyev
Aleksey Ovchinin
Alexander Gerst
Alexander Misurkin
Alexey Leonov
Alfred Worden
Alvin Drew
Alvin S. White
Anatoli Ivanishin
Anatoly Berezovoy
Anatoly Filipchenko
Anatoly Solovyev
Andreas Mogensen
Andrei Borisenko