NASA Astronaut Group 20
NASA Astronaut Group 20 saw the training of nine mission specialists, and five international mission specialists to become NASA astronauts. These 14 astronauts began training in August 2009 and officially graduated as astronauts on 4 November 2011.- Serena M. Auñón
- *Flight Engineer, Expedition 56/57
- Jeanette J. Epps
- Jack D. Fischer
- *Flight Engineer, Expedition 52/53
- Michael S. Hopkins
- *Flight Engineer, Expedition 37/38
- * Future Flight, Commander, USCV-1
- Kjell N. Lindgren
- *Flight Engineer, Expedition 44/45
- Kathleen Rubins
- *Flight Engineer, Expedition 48/49
- * Future Flight, Flight Engineer, Expedition 63/64
- Scott D. Tingle
- *Flight Engineer, Expedition 54/55
- Mark T. Vande Hei
- *Flight Engineer, Expedition 53/54
- Gregory R. Wiseman
- *Flight Engineer, Expedition 40/41
- Jeremy Hansen, Canada
- Norishige Kanai, Japan
- *Flight Engineer, Expedition 54/55
- Takuya Onishi, Japan
- *Flight Engineer, Expedition 48/49
- David Saint-Jacques, Canada
- *Flight Engineer, Expedition 58/59
- Kimiya Yui, Japan
- *Flight Engineer, Expedition 44/45
