Look up cosmonaut in Wiktionary, the free dictionary.
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