A cosmonaut or astronaut is a person trained by a human spaceflight program to command, pilot, or serve as a crew member of a spacecraft.
Cosmonaut may also refer to: Cosmonaut (film), a 2009 Italian coming-of-age film The Cosmonaut, a 2013 Spanish science fiction film Cosmonauts Sea, a sea of the Southern Ocean off Antarctica Cosmonaut Glacier, a tributary glacier in the Southern Cross Mountains, Antarctica Cosmonaut (album), by Bump of Chicken Cosmonaut, a side project of the band Finch
See also Cosmonauts Alley, a wide avenue in northern Moscow Astronaut (disambiguation)