N
Steven R. Nagel — STS-51-G, STS-61-A, STS-37, STS-55
George Nelson — STS-41-C, STS-61-C, STS-26
Grigori Nelyubov (1934–1966) — No flights. Vostok backup.
Rodolfo Neri Vela — STS-61-B
Paolo A. Nespoli — STS-120, Soyuz TMA-20
James H. Newman — STS-51, STS-69, STS-88, STS-109
Claude Nicollier — STS-46, STS-61, STS-75, STS-103
Niè Hǎishèng — Shenzhou 6
Andriyan Nikolayev (1929–2004) — Vostok 3, Soyuz 9
Soichi Noguchi — STS-114, Soyuz TMA-17
Carlos I. Noriega — STS-84, STS-97
Lisa Nowak — STS-121
Karen Nyberg — STS-124Read more about this topic: List Of Astronauts By Name