Richard Searfoss
Richard Truly
Robert Cabana
Robert Crippen
Robert Curbeam
Robert Overmyer
Robert Parker
Robert Thirsk
Roberta Bondar
Roberto Vittori
Rodolfo Neri Vela
Roger Crouch
Ronald Evans
Ronald McNair
Ronald Sega
Russell Schweickart
Salizhan Sharipov
Sally Ride

Sandra Magnus
Scott Altman
Scott Carpenter
Scott Parazynski
Sergei Avdeyev
Sergei Krikalev
Sergei Treschev
Sergei Zalyotin
Shannon Lucid
Sigmund Jähn
Soichi Noguchi
Stephanie Wilson
Stephen Frick
Stephen Robinson
Steven Hawley
Steven Lindsey
Story Musgrave
Stuart Roosa

Sultan bin Salman bin Abdulaziz al-Saud
Susan Helms
Svetlana Savitskaya
Takao Doi
Talgat Musabayev
Taylor Wang
Terry Hart
Thomas Jones
Thomas Reiter
Toktar Aubakirov
Toyohiro Akiyama
Ulf Merbold
Ulrich Walter
Umberto Guidoni
Valentin Lebedev
Valentina Tereshkova
Valeri Kubasov
Valeri Polyakov

Valeri Ryumin
Valery Bykovsky
Valery Korzun
Valery Tokarev
Vance Brand
Vasili Lazarev
Viktor Gorbatko
Viktor Patsayev
Viktor Savinykh
Vladimir Aksyonov
Vladimir Dzhanibekov
Vladimir Komarov
Vladimir Kovalyonok
Vladimir Lyakhov
Vladimír Remek
Vladimir Shatalov