K
- Franz Kafka (1883–1924)
- Janet Kagan (1946–2008)
- Michael Kandel (born 1941)
- Colin Kapp (1928–2007)
- Alexander Kazantsev, (1906–2002)
- Joseph E. Kelleam (1913–1975)
- James Patrick Kelly (born 1951)
- Katharine Kerr (born 1944)
- John Kessel (born 1950)
- Roy Kettle
- Alexander Key (1904–1979)
- Daniel Keyes (born 1927)
- Gregory Keyes (born 1963)
- David Kier (born 1943)
- Caitlín R. Kiernan (born 1964)
- Lee Killough (born 1942)
- Wade A. Kimberlin (born 1970)
- Sara King (born 1982)
- Stephen King (born 1947)
- T. Jackson King (born 1948)
- Vincent King (born 1935)
- John Kippax (1915–1974)
- Annette Curtis Klause
- Donald Kingsbury (born 1929)
- Hugh Kingsmill (1889–1949)
- David Barr Kirtley (born 1977)
- Gérard Klein (born 1937)
- Nigel Kneale (1922–2006)
- Damon Knight (1922–2002)
- Dean R. Koontz (born 1945)
- Cyril M. Kornbluth (1923–1958)
- Tom Kratman (born 1956)
- Nancy Kress (born 1948)
- Günther Krupkat (1905–1990)
- Zoran Krušvar (born 1977)
- Michael P. Kube-McDowell (born 1954)
- Henry Kuttner (1915–1958)
Read more about this topic: List Of Science Fiction Authors