- Spears, Cyrus (fl. 2020s); used pseudonym Sirius (items) (chron.)
- See www.uncrownednovel.com
- Spears, Heather (1934- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/spears_heather
- Spector, Caroline; [born Caroline Skelley] (fl. 1990s-2010s) (items) (chron.)
- See en.wikipedia.org/wiki/Caroline_Spector
- Spector, Elijah Kinch (fl. 2020s) (items) (chron.)
- See elijahkinchspector.com
- Spector, Joel (fl. 1990s-2010s) (items) (chron.)
- See www.joelspector.com
- Spedding, Amanda J. (fl. 2000s-2020s) (items) (chron.)
- See www.phoenixeditingandproofreading.com
- Speed, Andrea (fl. 2010s) (items) (chron.)
- See andreaspeed.com
- Speedling, Kendra Leigh (fl. 2010s) (items) (chron.)
- See www.beneath-ceaseless-skies.com/authors/kendra-leigh-speedling/
- Speegle, Darren (fl. 2000s-2010s) (items) (chron.)
- See www.goodreads.com/author/show/1126527.Darren_Speegle
- Speer, Jack; [i.e., John Bristol Speer] (1920-2008) (items) (chron.)
- See en.wikipedia.org/wiki/Jack_Speer
- Spehner, Laurine (fl. 1990s-2020s) (items) (chron.)
- See laurine-spehner.com
- Speidell, Kevin (fl. 2010s-2020s) (items) (chron.)
- See www.kevins-art.com
- Speight, T(homas) W(ilkinson) (1830-1915) (items) (chron.)
- See tellersofweirdtales.blogspot.co.uk/2016/05/two-victorian-british-authors.html
- Speller, Maureen Kincaid (1959-2022); previously known as Maureen Porter (items) (chron.)
- See sf-encyclopedia.com/entry/speller_maureen_kincaid
- Spelman, Lucien E. G. (fl. 2000s-2010s) (items) (chron.)
- See lucienegspelman.com
- Spencer, Beth (fl. 2010s) (items) (chron.)
- See bethspencer.com
- Spencer, Dean (fl. 2000s-2010s) (items) (chron.)
- See www.deanspencerart.com
- Spencer, Elizabeth (F.) (fl. 2010s) (items) (chron.)
- See efspencer.com
- Spencer, Leonard G. (fl. 1950s); house pseudonym used by Randall Garrett (1927-1987) & Robert Silverberg (1935- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/spencer_leonard_g
- Spencer, Matt (1979- ) (items) (chron.)
- See mattspencerauthor.word-press.com
- Spencer, Paul H(arrison) (1923-2014) (items) (chron.)
- See www.silverstallion.karkeeweb.com/kalki_archives/spencer_tribute.html
- Spencer, Wen (1963- ) (items) (chron.)
- See en.wikipedia.org/wiki/Wen_Spencer
- Spencer, William Browning (1946- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/spencer_william_browning
- Spencer-Brown, G(eorge) (1923-2016) (items)
- See en.wikipedia.org/wiki/G._Spencer-Brown
- Spenser, Edmund (1552-1599) (items)
- See en.wikipedia.org/wiki/Edmund_Spenser
- Sperduto, Benjamin (fl. 2000s-2010s) (items) (chron.)
- See www.benjaminsperduto.com
- Spicer, Bill (1937- ) (items) (chron.)
- See en.wikipedia.org/wiki/Bill_Spicer
- Spiegelman, Art; [i.e., Itzhak Avraham ben Zeev Spiegelman] (1948- ) (items)
- See en.wikipedia.org/wiki/Art_Spiegelman
- Spierig, Michael (1976- ) (items)
- See en.wikipedia.org/wiki/Spierig_brothers
- Spierig, Peter (1976- ) (items)
- See en.wikipedia.org/wiki/Spierig_brothers
- Spiffopops; pseudonym of Sean Madden (fl. 1990s-2010s) (items) (chron.)
- See www.deviantart.com/spiffopops
- Spillane, Mickey; [i.e., Frank Morrison Spillane] (1918-2006) (items) (chron.)
- See en.wikipedia.org/wiki/Mickey_Spillane
- Spillard, C(andida) L. (fl. 2010s) (items) (chron.)
- See www.cspillardwriter.co.uk
- Spillum, Todd (1952-2025); used pseudonym Todd Grimson (items)
- See locusmag.com/2025/03/todd-grimson-1952-2025/
- Spinabelli, Lauren (fl. 2010s) (items) (chron.)
- See mudseasonreview.com/author/lauren-spinabelli/
- Spinrad, Norman (Richard) (1940- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/spinrad_norman
- Spires, D. A. Xiaolin (fl. 2010s-2020s) (items) (chron.)
- See daxiaolinspires.wordpress.com
- Spitz, Jacques (1896-1963) (items)
- See www.sf-encyclopedia.com/entry/spitz_jacques
- Spitzer, Wayne Kyle (1966- ) (items) (chron.)
- See en.wikipedia.org/wiki/Wayne_Spitzer
- Spivak, John L(ouis) (1897-1981) (items) (chron.)
- See en.wikipedia.org/wiki/John_L._Spivak
- Spofford, Harriet (Elizabeth) Prescott (1835-1921); previously known as Harriet Elizabeth Prescott (items) (chron.)
- See en.wikipedia.org/wiki/Harriet_Elizabeth_Prescott_Spofford
- Spooner, Luke (A.) (fl. 2010s-2020s) (items) (chron.)
- See www.carrionhouse.com
- Spoor, Ryk E. (1962- ) (items) (chron.)
- See en.wikipedia.org/wiki/Ryk_E._Spoor
- Spotnitz, Frank (Charles) (1960- ) (items)
- See en.wikipedia.org/wiki/Frank_Spotnitz
- Sprang, Richard W(illiam) (1915-2000) (items) (chron.)
- See en.wikipedia.org/wiki/Dick_Sprang
- Sprigg, C(hristopher) St. John (1907-1937) (items) (chron.)
- Brother of Theodore S. Sprigg.
- Sprigg, Theodore S(tanhope) (1903-1977) (items)
- See andrewdarlington.blogspot.com/2019/01/science-fiction-two-magazines-called.html
- Spriggs, Bianca (Lynne) (fl. 2010s) (items) (chron.)
- See www.biancaspriggs.com
- Springer, Nancy (Connor) (1948- ) (items) (chron.)
- See en.wikipedia.org/wiki/Nancy_Springer
- Springer, Norman (1888-1974) (items) (chron.)
- See www.imdb.com/name/nm0819748
- Sproule, Dale L. (fl. 1980s-2010s) (items) (chron.)
- See dlsproule.blogspot.co.uk
- Spruill, Steven G(regory) (1946- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/spruill_steven_g
- Spurlock, J(ess) David (1959- ) (items)
- See en.wikipedia.org/wiki/J._David_Spurlock
- Spurlock, Morgan (Valentine) (1970-2024) (items)
- See en.wikipedia.org/wiki/Morgan_Spurlock
- Spurrier, Simon (fl. 2000s) (items) (chron.)
- See en.wikipedia.org/wiki/Simon_Spurrier
- Squier, Emma-Lindsay; [Mrs. John Bransby] (1892-1941) (items) (chron.)
- See lakechapalaartists.com/?p=3239
- Squirrell, William B.; pseudonym of Robert G. Penner (fl. 2010s-2020s) (items) (chron.)
- See blindsquirrell.com
- Sriduangkaew, Benjanun; pseudonym (fl. 2010s-2020s) (items) (chron.)
- See beekian.wordpress.com
- Srinivas, Simo (fl. 2020s) (items) (chron.)
- See www.fantasy-magazine.com/fm/admin/authors/simo-srinivas
- Staaz, Arthur (fl. 2010s-2020s) (items) (chron.)
- See arthurstaaz.wordpress.com
- Stabback, Christopher (fl. 2010s) (items) (chron.)
- See chrisstabback.com
- Stableford, Brian (Michael) (1948-2024) (items) (chron.)
- See www.sf-encyclopedia.com/entry/stableford_brian_m
- Stableford, Leo M. (fl. 1980s-1990s) (items) (chron.)
- Son of Brian M. Stableford.
- Stables, [Dr.] (William) Gordon (1840-1910) (items) (chron.)
- See en.wikipedia.org/wiki/William_Gordon_Stables
- Stabs, Lilith; [born Laurie Wright] (1968- ) (items)
- See www.imdb.com/name/nm0820931
- Stacey, (Harold Charles) Barnard (1889-1973) (items) (chron.)
- Born in London; died in Newton Abbot, Devonshire.
- Stacho, Ján (1936-1995) (items) (chron.)
- See sk.wikipedia.org/wiki/Ján_Stacho