- Kloor, Harry Doc (1963- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Harry_Kloor
- Kloos, Marko (fl. 2010s) (stories)
- See www.markokloos.com
- Kloster, Gary (fl. 2000s-2010s) (stories)
- See www.garykloster.com
- Kloutsou, Marilena ({c}1991- ) (stories) (assoc.)
- See frozenmistress.deviantart.com
- Kluge, Alexander (1932- ) (stories)
- See en.wikipedia.org/wiki/Alexander_Kluge
- Kluwe, Chris (1981- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Chris_Kluwe
- Knapke, William F. (1870-1969) (stories)
- See www.goldenwestbooks.com/railcars/the-railroad-caboose/
- Knapp, Adeline (1860-1909) (stories)
- See www.sf-encyclopedia.com/entry/knapp_adeline
- Knapp, George L(eonard) (1872-?) (stories)
- Writer, editor of weekly railroad newspaper Labor. Born in Dover, Minnesota.
- Knauf, Daniel (fl. 1980s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Daniel_Knauf
- Knaus, Ludwig (1829-1910) (art)
- See en.wikipedia.org/wiki/Ludwig_Knaus
- Knave, Adam P. (fl. 2000s-2010s) (stories)
- See www.adampknave.com
- Kneale, Heidi Wessman (fl. 2000s-2010s) (stories)
- See members.iinet.net.au/damian/heidikneale
- Kneale, (Thomas) Nigel (1922-2006) (stories) (assoc.)
- See en.wikipedia.org/wiki/Nigel_Kneale
- Knebel, Fletcher (1911-1993) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/knebel_fletcher
- Kneen, Orville H(ayter) (1889-1964) (stories)
- American aviator.
- Knevels, Gertrude (1881-1962) (stories)
- Born in Fishkill-on-Hudson, N.Y.; studied in Europe.
- Knez, Dora (fl. 1990s-2000s) (stories)
- See www.sfsite.com/04b/fft102.htm
- Knibbs, Henry Herbert (1874-1945) (stories) (assoc.)
- Poet and novelist. Born in Clifton, Ontario; died in La Jolla, California.
- Knickerbocker, Charles H(errick) (1922-2001) (stories)
- Physician and novelist. Born in Syracuse, New York; lived in Maine.
- Knickmeyer, Steve (1944- ) (stories)
- See fr.wikipedia.org/wiki/Steve_Knickmeyer
- Knickrehm, Darryl (fl. 2010s) (stories) (art)
- See knickrehm.blogspot.co.uk
- Knievel, Evel [i.e., Robert Craig Knievel] (1938-2007) (stories) (assoc.)
- See en.wikipedia.org/wiki/Evel_Knievel
- Kniffin, Harry Anable (1876-1939) (stories)
- See tellersofweirdtales.blogspot.co.uk/2011/05/harry-anable-kniffin-1876.html
- Knigge, Andreas C. (1957- ) (stories) (assoc.)
- See de.wikipedia.org/wiki/Andreas_C._Knigge
- Knight, Barbara (Bradford) (1920-2005) (stories)
- Born in New Jersey; died in Kentucky; an award-winning painter; operated an art gallery in New Hampshire.
- Knight, Bernard (1931- ) (stories)
- Barrister and doctor.
- Knight, Charles R(obert) (1874-1953) (stories) (art)
- See en.wikipedia.org/wiki/Charles_R._Knight
- Knight, Clifford (Reynolds) (1886-1963) (stories)
- Novelist, journalist, writer. Born in Fulton, Kansas; educated in Kansas and at U. of Mich.; newspaper editor in Kansas City, free-lance writer in California; contributed short stories to numerous magazines.
- Knight, Damon (Francis) (1922-2002) (stories) (art) (assoc.)
- See www.sf-encyclopedia.com/entry/knight_damon
- Knight, Eric (Mowbray) (1897-1943) (stories) (assoc.)
- See en.wikipedia.org/wiki/Eric_Knight
- Knight, George (Edward G. C.) (1873-1949) (stories)
- Born in Wigan, England; died in Sheffield; a journalist.
- Knight, [Captain] Gerald Featherstone (1894-1919) (stories)
- See www.greatwarmemoriesmk.co.uk/featherstone-knight-gerald.html
- Knight, J(ames) C(harles) B(urdett) (1897-1997) (stories) (art)
- See bearalley.blogspot.co.uk/2018/04/j-c-b-knight.html
- Knight, James Herbert [born James Herbert Brockett] (1892-1945) (stories) (assoc.)
- See en.wikipedia.org/wiki/James_H._Knight
- Knight, John Alden (1890-1966) (stories) (assoc.)
- Novelist, sportsman, author. Died in Islamorada, Florida.
- Knight, Jonah (fl. 2000s-2010s) (stories) (assoc.)
- See www.jonahofthesea.com
- Knight, Joseph (1829-1907) (stories)
- See en.wikipedia.org/wiki/Joseph_Knight_(critic)
- Knight, Kathleen Moore (1890-1984) (stories)
- See www.sf-encyclopedia.com/entry/knight_kathleen_moore
- Knight, Kobold; pseudonym of Eric Cawood Gwyddyn Giddy (1895-1957) (stories)
- This later became his legal name.
- Knight, [Dame] Laura (née Johnson) (1877-1970) (stories) (art) (assoc.)
- See en.wikipedia.org/wiki/Laura_Knight
- Knight, Leonard A(lfred) (1895-1977) (stories)
- Born in East Preston, England; died in Haverford, West Dyford, Wales.
- Knight, (Charles Henry) Maxwell (1900-1968) (stories)
- Served in the Royal Navy; was Director of Intelligence for the British Fascists; later served some years in MI5, where he was a recruiter (including of Ian Fleming) and the model for Flemings character M in the James Bond books; an expert in the fields of ornithology and zoology.
- Knight, Michael (1969- ) (stories)
- See en.wikipedia.org/wiki/Michael_Knight_(writer)
- Knight, Norman L(ouis) (1895-1972) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/knight_norman_l
- Knight, Raymond (1899-1953) (stories)
- See en.wikipedia.org/wiki/Raymond_Knight_(radio)
- Knight, Ruth Adams (1894-1974) (stories)
- See www.janebadgerbooks.co.uk/usa4/knight-garner.html
- Knight, Sam (fl. 2010s) (stories) (art)
- See samknight.com
- Knight, Shauna Aura (fl. 2010s) (stories) (art)
- See www.shaunaauraknight.com
- Knight-Adkin, F(rederick) J(ohn) (1883-1964) (stories)
- See www.greywall.demon.co.uk/genealogy/fjka.html
- Knightley, [Lady] Louisa Mary (née Bowater) (1842-1913) (stories) (assoc.)
- See www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=152384161
- Knightly, Robert (fl. 2000s-2010s) (stories)
- See robertknightly.blogspot.co.uk
- Knighton, Andrew (fl. 2000s-2010s) (stories)
- See andrewknighton.com
- Knighton, Tony (fl. 2010s) (stories)
- See www.tonyknighton.com
- Knightsmith, W. (fl. 1920s) (stories) (assoc.)
- See etiquipedia.blogspot.co.uk/2015/12/a-british-king-of-etiquette.html
- Knipe, Emilie Benson (1870-1958) (stories) (art)
- Born in Philadelphia, PA.
- Knippling, DeAnna (fl. 2010s) (stories)
- See blog.deannaknippling.com
- Knittel, John (Herman Emanuel) (1891-1970) (stories)
- See www.sf-encyclopedia.com/entry/knittel_john
- Knobloch, Victoria Jakes (1989- ) (stories)
- See victoriajakes.com/bio
- Knolan, Kellen (fl. 2010s) (stories)
- See kellenknolan.com
- Knoles, William (Henley) (1926-1972) (stories)
- See efanzines.com/EK/eI7/index.htm
- Knoll, Tricia (fl. 2010s) (stories)
- See triciaknoll.com
- Knollys, (Elizabeth) Charlotte (1835-1930) (stories) (assoc.)
- See en.wikipedia.org/wiki/Charlotte_Knollys
- Knollys, [Sir] Henry (1840-1930) (stories)
- See en.wikipedia.org/wiki/Henry_Knollys_(Royal_Artillery_officer)
- Knollys, William Wallingford (1833-1904) (stories)
- See en.wikisource.org/wiki/The_Times/1904/Obituary/William_Wallingford_Knollys
- Knopf, Chris (1951- ) (stories)
- See www.chrisknopfmystery.com/
- Knotts, Raymond (1889-1968) (stories)
- Born in Illinois; newspaper editor and columnist in Chicago.
- Knowles, Brent (fl. 2000s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Brent_Knowles
- Knowles, Christopher (1966- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Christopher_Knowles_(comics)
- Knowles, Davidson (1852-1901) (art)
- See en.wikipedia.org/wiki/Davidson_Knowles
- Knowles, Frederic Lawrence (1869-1905) (stories)
- See www.infoplease.com/t/poetry/modern-verse/knowles-bio.html
- Knowles, James Sheridan (1784-1864) (stories)
- Born in Cork, Ireland; taken to London as a child and later studied medicine in Scotland; turned to writing romantic plays for the London stage; became a Baptist in the early 1840s and acquired a reputation as a preacher.
- Knowles, Mabel Winifred (1875-1949) (stories)
- Born in Streatham.
- Knowles, (James) Sheridan (1784-1862) (stories) (art)
- See en.wikipedia.org/wiki/James_Sheridan_Knowles
- Knox, Bill [i.e., William Knox] (1928-1999) (stories)
- See en.wikipedia.org/wiki/Bill_Knox
- Knox, Frank [i.e., William Franklin Knox] (1874-1944) (stories)
- See en.wikipedia.org/wiki/Frank_Knox
- Knox, John C(lark) (1881-1966) (stories)
- See en.wikipedia.org/wiki/John_C._Knox_(New_York)
- Knox, John H. (1905-1983) (stories) (assoc.)
- Not animal scientist John Harvey Knox (1898-1979).
- Knox, Kathleen Muriel Eyles (1913- ) (stories)
- Daughter of Leonora Eyles.
- Knox, Philander Chase (1853-1921) (stories) (assoc.)
- See en.wikipedia.org/wiki/Philander_C._Knox
- Knox, [Monsignor] Ronald A(rbuthnott) (1888-1957) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/knox_ronald_a
- Knox, William (1789-1825) (stories)
- See en.wikipedia.org/wiki/William_Knox_(Scottish_poet)
- Knox-Johnston, Robin [i.e., Sir William Robert Patrick Knox-Johnston] (1939- ) (stories)
- See en.wikipedia.org/wiki/Robin_Knox-Johnston
- Knudson, Grace P(owers) T(homas) (1881-?) (stories)
- Traveller and journalist. Born and lived in Castine, Maine.
- Knudtsen, Ken (fl. 2010s) (art)
- See kenknudtsen.blogspot.co.uk
- Kobbé, Gustav (1857-1918) (stories)
- See en.wikipedia.org/wiki/Gustav_Kobb%C3%A9
- Koboldt, Dan (fl. 2010s) (stories) (assoc.)
- See dankoboldt.com
- Koch, Aud (fl. 2010s) (art)
- See audkoch.com
- Koch, Gini [born Jeanne Marie Gerrard] (fl. 2010s) (stories)
- See en.wikipedia.org/wiki/Gini_Koch
- Koe, Tapanga (fl. 2010s) (stories)
- See www.asymmetryfiction.com/author/tapangakoe/
- Koebel, W(illiam) H(enry) (1872-1923) (stories)
- See www.sf-encyclopedia.com/entry/koebel_w_h
- Koefod, Susan (fl. 2010s) (stories)
- See susankoefod.com
- Koelle, Spencer (B.) (fl. 2000s-2010s) (stories)
- See sites.google.com/site/spencerbkoelle/
- Koelzer, Jay (fl. 2010s) (art)
- See www.illustrationsource.com/stock/artist/jay-koelzer
- Koen, Viktor (fl. 1990s-2010s) (stories) (art) (assoc.)
- See www.viktorkoen.com
- Koenig, Joseph L. (1946- ) (stories)
- Reporter for true crime periodicals; living in New York City.
- Koenig, Walter (1936- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/koenig_walter
- Koestler, Arthur (1905-1983) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/koestler_arthur