Astronauten
Shaun the Sheep
European Space Agency
Sheikh Muszaphar Shukor
Malaysian National Space Agency
Sherwood C. Spring
National Aeronautics and Space Administration
Shubhanshu Shukla
Indian Space Research Organization
Sian Proctor
SpaceX
Sidney M. Gutierrez
National Aeronautics and Space Administration
Sigmund Jähn
Russian Federal Space Agency (ROSCOSMOS)
Sir Richard Branson
Virgin Galactic
Sirisha Bandla
Virgin Galactic
Snoopy
National Aeronautics and Space Administration
Soichi Noguchi
Japan Aerospace Exploration Agency
Sol Alan Stern
National Aeronautics and Space Administration
Song Lingdong
China National Space Administration
Sonny Carter
National Aeronautics and Space Administration
Stanley G. Love
National Aeronautics and Space Administration
Stephanie Wilson
National Aeronautics and Space Administration
Stephen Bowen
National Aeronautics and Space Administration
Stephen Frick
National Aeronautics and Space Administration
Stephen Robinson
National Aeronautics and Space Administration
Stephen S. Oswald
National Aeronautics and Space Administration
Steve MacLean
Canadian Space Agency
Steve Young
Blue Origin
Steven Hawley
National Aeronautics and Space Administration
Steven Lindsey
National Aeronautics and Space Administration