- Sibbering, Philip (fl. 2000s-2010s) (art)
- See www.philipsibbering.com
- Sibson, Francis H(enry) (1899-1972) (stories)
- See www.sf-encyclopedia.com/entry/sibson_francis_h
- Sidorova, Julia M. (fl. 2010s) (stories)
- See www.sf-encyclopedia.com/entry/sidorova_j_m
- Siebel, Dustin Dante (fl. 2010s) (stories)
- See dustinsiebel.hubpages.com
- Siegel, Larry (1925-2019) (stories)
- See en.wikipedia.org/wiki/Larry_Siegel
- Siegel, Martin (1941-1972) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/siegel_martin
- Sieger, Anja Notanja (fl. 2010s) (stories)
- See anjanotanja.com/resume
- Siergiejew, Mariusz (fl. 2010s) (art)
- See www.holographic9.blogspot.com
- Sieveking, Lance(lot de Giberne) (1896-1972) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/sieveking_lance
- Sigler, Scott (fl. 1990s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Scott_Sigler
- Signorini, Giuseppe (1857-1932) (art)
- See en.wikipedia.org/wiki/Giuseppe_Signorini
- Silbersack, John W(alter) (1954- ) (stories)
- See www.sf-encyclopedia.com/entry/silbersack_john
- Silent, William T.; pseudonym of John William Jackson, Jr. (1945- ) (stories)
- See www.sf-encyclopedia.com/entry/silent_william_t
- Silver, Steven H (1967- ) (stories)
- See en.wikipedia.org/wiki/Steven_H_Silver
- Silverberg, Barbara [née Brown] (fl. 1950s) (stories)
- First wife of Robert Silverberg.
- Silverberg, Robert (1935- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Robert_Silverberg
- Silverman, G. G. (fl. 2010s) (stories)
- See www.ggsilverman.com
- Silverman, Hildy (fl. 2000s-2010s) (stories)
- See www.milscifi.com/archives/arc-HildySilverman.htm
- Silversmith, Frances ({c}1969- ) (stories)
- See francessilversmith.com
- Silverthorne, Lisa S. (fl. 1990s-2010s) (stories)
- See www.drewes.org
- Sim, Dave (1958- ) (stories) (art)
- See www.sf-encyclopedia.com/entry/sim_dave
- Sim, Jeremy (fl. 2010s) (stories) (assoc.)
- See www.jeremysim.com
- Simak, Clifford D(onald) (1904-1988) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/simak_clifford_d
- Simanion (fl. 2010s) (art)
- See www.simanion.deviantart.com
- Simko, Michael V. (1893-1989) (stories)
- See tellersofweirdtales.blogspot.co.uk/2016/01/michael-v-simko-1893-1989.html
- Simmons, Dan (1948- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/simmons_dan
- Simmons, Kelly (fl. 2000s-2010s) (stories)
- See www.bykellysimmons.com
- Simmons, Kristen (fl. 2010s) (stories)
- See www.kristensimmonsbooks.com
- Simmons, Shane (fl. 1990s-2010s) (stories)
- See eyestrainproductions.com
- Simmons, William P. ({c}1975- ) (stories) (assoc.)
- See www.infinityplus.co.uk/misc/wps.htm
- Simms, Kimberly (fl. 2010s) (stories)
- See www.kimberlysimms.com
- Simon, John Oliver (1942-2018) (stories)
- See www.berkeleyside.com/2018/01/18/remembering-john-oliver-simon-distinguished-poet-teacher-translator
- Simonetti, Marc (fl. 2010s) (stories) (art) (assoc.)
- See www.marcsimonetti.com
- Simpson, Claire (fl. 2010s) (stories)
- See clairewriteswords.wordpress.com
- Simpson, Jacqueline (1930- ) (stories)
- See en.wikipedia.org/wiki/Jacqueline_Simpson
- Simpson, Jeff (1986- ) (stories) (art) (assoc.)
- See jeffsimpsonkh.deviantart.com
- Simpson, Leanne Betasamosake (fl. 2010s) (stories)
- See en.wikipedia.org/wiki/Leanne_Betasamosake_Simpson
- Simpson, Phillip (fl. 2010s) (art)
- See phillz-art.deviantart.com
- Simpson, Phillip W. (fl. 2010s) (stories)
- See www.phillipwsimpson.com
- Sims, Burt(on R.) (1919- ) (stories)
- California writer.
- Sims, George R(obert) (1847-1922) (stories)
- Born in London and educated at Hanwell Military College and Bonn Univ.; journalist, dramatist, novelist and ss writer.
- Sims, Jeffery Scott (fl. 2000s-2010s) (stories)
- See jefferyscottsims.webs.com
- Sims, Maynard; pseudonym of L. H. Maynard (1953- ) & Michael P. N. Sims (1952- ) (stories) (assoc.)
- See www.maynard-sims.com
- Sims, Roger (1930- ) (stories)
- See fancyclopedia.org/roger-sims
- Sinclair, Alison (fl. 1980s-2010s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/sinclair_alison
- Sinclair, Andrew (Annandale) (1935-2019) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/sinclair_andrew
- Sinclair, Iain (MacGregor) (1943- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/sinclair_iain
- Sinclair, Upton (Beall) (1878-1968) (stories)
- See www.sf-encyclopedia.com/entry/sinclair_upton
- Sinda, Petri (fl. 1990s-2000s) (stories)
- See www.austlit.edu.au/austlit/page/A63535
- Singer, Ben(jamin D.) (1931-2012) (stories)
- See fancyclopedia.wikidot.com/ben-singer
- Singer, Isaac Bashevis (1904-1991) (stories) (assoc.)
- See en.wikipedia.org/wiki/Isaac_Bashevis_Singer
- Singer, Kevin (fl. 2010s) (stories)
- See www.goodreads.com/author/show/7008115.Kevin_Singer
- Singer, Kurt (Deutsch) (1911-2005) (stories)
- Editor, anthologist, lecturer. Born in Vienna, Austria; came to United States in 1940; naturalized in 1951.
- Singh, Aditya (fl. 2010s) (stories)
- See authoradityasingh.blogspot.co.uk
- Singh, Kirpal (1949- ) (stories)
- See eresources.nlb.gov.sg/infopedia/articles/SIP_464_2004-12-23.html
- Singh, Mahendra (fl. 2010s) (stories) (art) (assoc.)
- See justtheplaceforasnark.blogspot.co.uk
- Singh, Preeti (1971- ) (stories)
- See en.wikipedia.org/wiki/Preeti_Singh
- Singh, Vandana (fl. 2000s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Vandana_Singh
- Sinisalo, (Aila) Johanna (1958- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Johanna_Sinisalo
- Sinn, Elisa (fl. 2010s) (stories)
- See www.proz.com/profile/2517307
- Siodmak, Curt (1902-2000) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/siodmak_curt
- Siren, Sofia (fl. 2010s) (stories)
- See sofiasiren.tumblr.com
- Sirius, R. U. [born Ken Goffman] (1952- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/R._U._Sirius
- Sirois, Al L. (fl. 1970s-2010s) (stories) (art)
- See www.alsirois.com
- Sirois, Douglas A. (fl. 2000s-2010s) (stories) (art) (assoc.)
- See www.dougsirois.com
- Sisson, Amy (fl. 2000s-2010s) (stories)
- See amysreviews.blogspot.co.uk
- Sistla, Amber D. (fl. 2000s-2010s) (stories)
- See www.ambersistla.com
- Sjunneson-Henry, Elsa (fl. 2010s) (stories)
- See feministsonar.com
- Skaftun, Emily C. (fl. 2000s-2010s) (stories)
- See www.eskaftun.com
- Skal, David J(ohn) (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/skal_david_j
- Skallagrimson, Eigill ({c}910-{c}990) (stories)
- See en.wikipedia.org/wiki/Egill_Skallagr%C3%ADmsson
- Skank, Nathan (fl. 2000s) (art)
- See www.creativeshake.com/profile.html?MyUrl=NathanSkank
- Skelton, Paul (fl. 1970s-2010s) (stories)
- See fancyclopedia.org/paul-skelton
- Skerry, Cory (fl. 2010s) (stories) (art)
- See plunderpuss.net/skerry/faq.html
- Sketchley, Martin (fl. 1990s-2010s) (stories) (assoc.)
- See www.martinsketchley.co.uk
- Skidmore, Joseph William (1890-1938) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/skidmore_joseph_w
- Skinner, Alanson (Buck) (1886-1925) (stories)
- Noted anthropologist. Born in Buffalo, New York; died near Tokio, North Dakota.
- Skinner, B(urrhus) F(rederick) (1904-1990) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/skinner_b_f
- Skinner, Cortney (fl. 1980s-2000s) (stories) (art)
- See www.cortneyskinner.com
- Sklar, David (fl. 2000s-2010s) (stories)
- See davidwriting.com
- Skovron, Jon (fl. 2000s-2010s) (stories)
- See jonskovron.com
- Sky, Kathleen (stories)
- See en.wikipedia.org/wiki/Kathleen_Sky
- Skye, Obert (1970- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Obert_Skye
- Sladek, John (Thomas) (1937-2000) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/sladek_john_t
- Slater, Henry J. (1879-1963) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/slater_henry_j
- Slater, Maggie (fl. 2000s-2010s) (stories)
- See maggiedot.wordpress.com
- Slater, Robert L. (fl. 1990s-2010s) (stories) (assoc.)
- See desertedlands.com
- Slatter, Angela (Gaye) (1967- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Angela_Slatter
- Slattery, Brian Francis (1975- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/slattery_brian_francis
- Slattum, J. R. (fl. 2010s) (art)
- See www.jrslattum.com
- Sleator, William (Warner, III) (1945-2011) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/sleator_william
- Slesar, Henry (1927-2002) (stories)
- See www.sf-encyclopedia.com/entry/slesar_henry
- Slipher, Earl C(harles) (1883-1964) (stories) (assoc.)
- See en.wikipedia.org/wiki/Earl_C._Slipher
- Sloan, Norman R(ose) (1902-1977) (stories)
- See ila.ilsl.br/pdfs/v45n3a14.pdf
- Sloboda, Noel (fl. 2000s-2010s) (stories)
- See www2.yk.psu.edu/sites/njs16
- Slonczewski, Joan (Lyn) (1956- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/slonczewski_joan
- Slosson, Annie Trumbull (1838-1926) (stories)
- See en.wikipedia.org/wiki/Annie_Trumbull_Slosson
- Slouka, Mark (1958- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Mark_Slouka
- Sluckin, W(ladyslaw) (1919-1985) (stories) (assoc.)
- See www2.le.ac.uk/departments/npb/news-1/sluckin-lecture
- Small, Austin J(ames) (1894-1929) (stories)
- See www.sf-encyclopedia.com/entry/small_austin_j
- Small, Joe Austell (1914-1994) (stories)
- Writer, publisher, editor. Born in Burleson County, Texas.
- Smart, A. C. (fl. 2000s-2010s) (stories)
- See www.beneath-ceaseless-skies.com/authors/a-c-smart-quinn-braver/
- Smart, W(illiam) M(arshall) (1889-1975) (stories) (assoc.)
- See en.wikipedia.org/wiki/William_Marshall_Smart