This is a list of cosmonauts who have taken part in the missions of the Soviet space program and the Russian Federal Space Agency, including ethnic Russians and people of other ethnicities.
Soviet and Russian cosmonauts born outside Russia are marked with an asterisk and their place of birth is shown in an additional list.
From 1978–1988, the Soviet Union transported 11 citizens of 10 nations closely allied to the USSR in the Soyuz crewed vehicle.
Since 2001, the Soyuz has been used to transport ESA, JAXA, and NASA astronauts to the International Space Station.
All claimed Soviet or Russian citizenship at the time of their space flights.