- Simpson, Phillip W. (fl. 2010s) (items) (chron.)
- See www.phillipwsimpson.com
- Sims, Burt(on R.) (1919- ) (items) (chron.)
- California writer.
- Sims, George R(obert) (1847-1922) (items) (chron.)
- See en.wikipedia.org/wiki/George_Robert_Sims
- Sims, Jeffery Scott (fl. 2000s-2020s) (items) (chron.)
- See jefferyscottsims.webs.com
- Sims, Maynard; pseudonym of L. H. Maynard & Michael P. N. Sims (fl. 2010s) (items)
- See www.maynard-sims.com
- Sims, Roger (1930-2022) (items) (chron.)
- See fancyclopedia.org/roger-sims
- Sinclair, Alison (fl. 1980s-2010s) (items) (chron.)
- See www.sf-encyclopedia.com/entry/sinclair_alison
- Sinclair, Andrew (Annandale) (1935-2019) (items) (chron.)
- See www.sf-encyclopedia.com/entry/sinclair_andrew
- Sinclair, Colin (fl. 2000s-2020s) (items) (chron.)
- See devilsjunkshop.com
- Sinclair, Iain (MacGregor) (1943- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/sinclair_iain
- Sinclair, James (1971- ) (items) (chron.)
- See www.comics.org/creator/6577
- Sinclair, Upton (Beall) (1878-1968) (items) (chron.)
- See www.sf-encyclopedia.com/entry/sinclair_upton
- Sinda, Petri (fl. 1990s-2000s) (items) (chron.)
- See www.austlit.edu.au/austlit/page/A63535
- Singer, Alex(ander) (1928- ) (items)
- See memory-alpha.fandom.com/wiki/Alexander_Singer
- Singer, Alex (fl. 2020s) (items) (chron.)
- See www.littlefoolery.com
- Singer, Isaac Bashevis (1904-1991) (items) (chron.)
- See en.wikipedia.org/wiki/Isaac_Bashevis_Singer
- Singer, Kevin (fl. 2010s-2020s) (items) (chron.)
- See www.goodreads.com/author/show/7008115.Kevin_Singer
- Singer, Kurt (Deutsch) (1911-2005) (items) (chron.)
- Editor, anthologist, lecturer. Born in Vienna, Austria; came to United States in 1940; naturalized in 1951.
- Singer, P(eter) W(arren) (fl. 2010s) (items)
- See www.pwsinger.com
- Singer, Rochelle Lee “Shelley” (1939-2022) (items)
- See www.shelleysinger.com
- Singh, Aditya (fl. 2010s) (items) (chron.)
- See authoradityasingh.blogspot.co.uk
- Singh, Kirpal (1949- ) (items) (chron.)
- See eresources.nlb.gov.sg/infopedia/articles/SIP_464_2004-12-23.html
- Singh, Mahendra (fl. 2010s) (items) (chron.)
- See justtheplaceforasnark.blogspot.co.uk
- Singh, Preeti (1971- ) (items) (chron.)
- See en.wikipedia.org/wiki/Preeti_Singh
- Singh, Vandana (fl. 2000s-2020s) (items) (chron.)
- See en.wikipedia.org/wiki/Vandana_Singh
- Singleton, (Henry) Earl (1916-1999) (items) (chron.)
- See fancyclopedia.org/Earl_Singleton
- Sinisalo, (Aila) Johanna (1958- ) (items) (chron.)
- See en.wikipedia.org/wiki/Johanna_Sinisalo
- Sinn, Elisa (fl. 2010s-2020s) (items)
- See www.proz.com/profile/2517307
- Sinor, Bradley H. (1952- ) (items) (chron.)
- See grantvillegazette.com/author/sinor_b
- Sinor, Susan P. (fl. 2000s-2020s) (items) (chron.)
- See grantvillegazette.com/author/sinor_s
- Siodmak, Curt (1902-2000) (items) (chron.)
- See www.sf-encyclopedia.com/entry/siodmak_curt
- Sippo, Arthur C., M.D., M.P.H. (1953- ) (items) (chron.)
- See artsreviews.libsyn.com
- Siren, Sofia (fl. 2010s) (items) (chron.)
- See sofiasiren.tumblr.com
- Sirius; pseudonym of Cyrus Spears (fl. 2020s) (items) (chron.)
- See www.uncrownednovel.com
- Sirius, R. U.; [born Ken Goffman] (1952- ) (items)
- See en.wikipedia.org/wiki/R._U._Sirius
- Sirois, Al L. (fl. 1970s-2020s) (items) (chron.)
- See www.alsirois.com
- Sirois, Douglas A. (fl. 2000s-2010s) (items) (chron.)
- See www.dougsirois.com
- Sisson, Amy (fl. 2000s-2010s) (items) (chron.)
- See amysreviews.blogspot.co.uk
- Sistla, Amber D. (fl. 2000s-2010s) (items) (chron.)
- See www.ambersistla.com
- Sittig, Linda Harris (fl. 2010s) (items) (chron.)
- See www.lindasittig.com
- Sjunneson-Henry, Elsa (1985- ) (items) (chron.)
- See feministsonar.com
- Skaftun, Emily C. (fl. 2000s-2020s) (items) (chron.)
- See www.eskaftun.com
- Skal, David J(ohn) (1952-2024) (items) (chron.)
- See www.sf-encyclopedia.com/entry/skal_david_j
- Skallagrímsson, Egill (904-995) (items) (chron.)
- See en.wikipedia.org/wiki/Egill_Skallagrímsson
- Skank, Nathan (fl. 2000s) (items) (chron.)
- See www.creativeshake.com/profile.html?MyUrl=NathanSkank
- Skeates, Steve (1943-2023) (items)
- See en.wikipedia.org/wiki/Steve_Skeates
- Skelton, Paul (fl. 1970s-2020s) (items) (chron.)
- See fancyclopedia.org/paul-skelton
- Skene, Fran(ces) (1937-2024) (items) (chron.)
- See fancyclopedia.org/Fran_Skene
- Skerry, Cory (fl. 2010s-2020s); used pseudonyms Inkshark & Plunderpuss (items) (chron.)
- See plunderpuss.net/skerry/faq.html
- Sketchley, Martin (fl. 1990s-2020s) (items) (chron.)
- See www.martinsketchley.co.uk
- Skidmore, Joseph William (1890-1938) (items) (chron.)
- See www.sf-encyclopedia.com/entry/skidmore_joseph_w
- Skillman, Judith (fl. 2020s) (items) (chron.)
- See www.judithskillman.com
- Skinner, Alanson (Buck) (1886-1925) (items) (chron.)
- Noted anthropologist. Born in Buffalo, New York; died near Tokio, North Dakota.
- Skinner, B(urrhus) F(rederick) (1904-1990) (items)
- See www.sf-encyclopedia.com/entry/skinner_b_f
- Skinner, Cortney (fl. 1970s-2010s) (items) (chron.)
- See www.cortneyskinner.com
- Skinner, David (1963- ) (items) (chron.)
- See www.davidskinner.biz
- Sklar, David (fl. 2000s-2020s) (items) (chron.)
- See davidwriting.com
- Skovron, Jon (fl. 2000s-2010s) (items) (chron.)
- See jonskovron.com
- Skrutskie, Emily (fl. 2020s) (items)
- See skrutskie.com
- Sky, Kathleen; married name of Kathleen McKinney (1943- ) (items) (chron.)
- See en.wikipedia.org/wiki/Kathleen_Sky
- Skyden (fl. 2000s) (items) (chron.)
- See skyden.deviantart.com
- Skye, Joshua (fl. 2010s-2020s) (items) (chron.)
- See joshuaskye.yolasite.com
- Skye, Obert (1970- ) (items) (chron.)
- See en.wikipedia.org/wiki/Obert_Skye
- Slabak, Ben (fl. 2010s-2020s) (items)
- See benslabak.com
- Slade, Killion (fl. 2010s) (items) (chron.)
- See www.KillionSlade.com
- Sladek, John (Thomas) (1937-2000); used pseudonym Thom Demijohn (items) (chron.)
- See www.sf-encyclopedia.com/entry/sladek_john_t
- Slansen, Caylee (1990- ) (items) (chron.)
- See www.deviantart.com/caylee-slansen