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- Roland C. Wagner (born 1960)
- Howard Waldrop (born 1946)
- F. L. Wallace (also known as Floyd Wallace)
- Ian Wallace (1912–1998)
- Hugh Walters (1910–1993)
- Donald Wandrei (1908–1987)
- Ian Watson (born 1943)
- Lawrence Watt-Evans (born 1954)
- Peter Watts (born 1958)
- Don Webb
- David Weber (born 1952), Honor Harrington series
- Stanley G. Weinbaum (1902–1935)
- Jan Weiss (1892–1972)
- Angus Wells (1943–2006)
- H. G. Wells (1866–1946)
- Martha Wells (born 1964)
- K. D. Wentworth (1951–2012)
- Wallace West (1900–1980)
- Scott Westerfeld
- Suzanne Weyn (born 1955)
- James White (1928–1999), Sector General series
- Steve White (born 1946)
- Ted White (born 1938)
- Sonny Whitelaw (born 1956), Stargate series
- Cherry Wilder (1930–2002)
- Kate Wilhelm (born 1928)
- Lynda Williams (born 1958), Okal Rel Universe series
- Liz Williams (born 1965)
- Rob Williams
- Tad Williams (born 1957), Otherland
- Walter Jon Williams (born 1953)
- Jack Williamson (1908–2006)
- Michael Z. Williamson (born 1967)
- Connie Willis (born 1945)
- Colin Wilson (born 1931)
- D. Harlan Wilson (born 1971)
- F. Paul Wilson (born 1946)
- Robert Anton Wilson (1932–2007)
- Robert Charles Wilson (born 1953)
- Richard Wilson (1920-1987)
- David Wingrove (born 1954), Chung Kuo series
- Adam Wiśniewski-Snerg (1937–1995)
- Otto Witt (1875–1923)
- Gene Wolfe (born 1931)
- Donald A. Wollheim (1914–1990) (various pseudonyms)
- Edmund Wnuk-Lipinski (born 1944)
- Jack Womack (born 1956)
- John C. Wright (born 1961), The Golden Age trilogy
- S. Fowler Wright (1874–1965)
- Stefan Wul (1922–2003) (pseudonym of Pierre Pairault)
- John Wyndham (1903–1969) (pseudonym of John Beynon Harris)
Read more about this topic: List Of Science Fiction Authors