Sergey Prokopyev

Status: Active
2/19/1975 –
Nationality: Russian
Type: Government
Agency: Russian Federal Space Agency (ROSCOSMOS)

Sergei Valeriyevich Prokopyev, born 19 February 1975 is a Russian cosmonaut. He is the commander of Soyuz MS-09, and flight engineer of Expedition 56/57 to the International space station.