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- Linda Nagata (born 1960)
- Jayant Narlikar (born 1938) (Marathi: जयंत विष्णू नारळीकर)
- Ondřej Neff (born 1945)
- Geoff Nelder (born 1947)
- Radell F. Nelson (born 1931)
- István Nemere
- Josef Nesvadba (1926–2005)
- Kris Neville (1925-1980)
- Yuri Nikitin (in Russian Юрий Никитин) (born 1939)
- Larry Niven (born 1938)
- Nick Nielsen (possibly pseudonym)
- William F. Nolan (born 1928)
- Jeff Noon (born 1957)
- John Norman (born 1931), the Gor series
- Lisanne Norman
- Eric North (pseudonym of Bernard Cronin (1884–1968))
- Andre Norton (1912–2005) (pseudonym of Alice Mary Norton)
- Alan E. Nourse (1928–1992)
- Eric S. Nylund (born 1964)
Read more about this topic: List Of Science Fiction Authors