Astronauts

Sally Ride

National Aeronautics and Space Administration

Samantha Cristoforetti

European Space Agency

Samuel T. Durrance

National Aeronautics and Space Administration

Sandra Magnus

National Aeronautics and Space Administration

Sarah Gillis

SpaceX

Sara Sabry

Blue Origin

Satoshi Furukawa

Japan Aerospace Exploration Agency

Scott Altman

National Aeronautics and Space Administration

Scott Carpenter

National Aeronautics and Space Administration

Scott D. Tingle

National Aeronautics and Space Administration

Scott E. Parazynski

National Aeronautics and Space Administration

Scott Horowitz

National Aeronautics and Space Administration

Scott Kelly

National Aeronautics and Space Administration

Scott Poteet

SpaceX

S. David Griggs

National Aeronautics and Space Administration

Serena Auñón-Chancellor

National Aeronautics and Space Administration

Sergei Avdeyev

Russian Federal Space Agency (ROSCOSMOS)

Sergei Krikalev

Russian Federal Space Agency (ROSCOSMOS)

Sergei Revin

Russian Federal Space Agency (ROSCOSMOS)

Sergei Treshchov

Russian Federal Space Agency (ROSCOSMOS)

Sergei Zalyotin

Russian Federal Space Agency (ROSCOSMOS)

Sergey Aleksandrovich Volkov

Russian Federal Space Agency (ROSCOSMOS)

Sergey Korsakov

Russian Federal Space Agency (ROSCOSMOS)

Sergey Kud-Sverchkov

Russian Federal Space Agency (ROSCOSMOS)

Sergey Mikayev

Russian Federal Space Agency (ROSCOSMOS)

Sergey Prokopyev

Russian Federal Space Agency (ROSCOSMOS)

Sergey Ryazansky

Russian Federal Space Agency (ROSCOSMOS)

Sergey Ryzhikov

Shannon Lucid

National Aeronautics and Space Administration

Shannon Walker

National Aeronautics and Space Administration

Sharon Hagle

Blue Origin

Shaun the Sheep

European Space Agency

Sheikh Muszaphar Shukor

Malaysian National Space Agency

Shengjie Tang

China National Space Administration

Sherwood C. Spring

National Aeronautics and Space Administration

Shubhanshu Shukla

Indian Space Research Organization