1964
January 25 – Air Force Group 2 Supplemental – USSR
- Georgi Beregovoi
May 26 – Voskhod Group (Medical Group 1) – USSR
- Vladimir Benderov, Georgi Katys, Vasili Lazarev, Boris Polyakov, Aleksei Sorokin, Boris Yegorov
June 11 – Civilian Specialist Group 1 – USSR
- Konstantin Feoktistov
Read more about this topic: List Of Astronauts By Year Of Selection