St
- Matthew Stadler
- Rebecca St. James (born 1977)
- Michael A. Stackpole (born 1957)
- Olaf Stapledon (1886–1950)
- Christopher Stasheff (born 1944)
- Danielle Steel (born 1947)
- Allen Steele (born 1958)
- Jessica Steele (born 1933)
- John Steinbeck (1902–1968)
- Stendhal (1783–1842)
- Joanne Stepaniak (born 1954)
- Neal Stephenson (born 1959)
- Bruce Sterling (born 1954)
- Laurence Sterne (1713–1768)
- W. Richard Stevens (1951–1999)
- Robert Louis Stevenson (1850–1894)
- Fred Mustard Stewart (1932–2007)
- Mariah Stewart
- Mary Stewart (born 1916)
- Michael Stewart (born 1946)
- R. L. Stine (born 1943)
- S. M. Stirling (born 1953)
- Kathryn Stockett
- Frank R. Stockton (1834–1902)
- Dejan Stojanović (born 1959), Serbian-American poet, writer, essayist, philosopher, businessman, and former journalist
- Bram Stoker (1847–1912)
- Katherine Stone (born 1949)
- Walter Scott Story (1879–1955)
- Lytton Strachey (1880–1932)
- J. Michael Straczynski (born 1954)
- Darin Strauss (born 1970)
- Charles Stross (born 1964)
- Boris and Arkady Strugatsky (sometimes listed contrariwise), a.k.a. the Strugatsky brothers (1925–1991) (born 1933)
- Alex Stuart (1914–1986) (a pseudonym of Violet Vivian Finlay Stuart Mann)
- Robyn Stuart (1914–1986) (a pseudonym of Violet Vivian Finlay Stuart Mann)
- V.A. Stuart (1914–1986) (a pseudonym of Violet Vivian Finlay Stuart Mann)
- Vivian Stuart (1914–1986) (a pseudonym of Violet Vivian Finlay Stuart Mann)
- Theodore Sturgeon (1918–1985)
- William Styron (1925–2006)
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