- Kizimecca (, Tkl) (1967- ) (items) (chron.)
- See www.absolutearts.com/portfolios/k/kizimecca
- Kjelgaard, Jim; [i.e., James Arthur Kjelgaard] (1910-1959) (items) (chron.)
- See www.sf-encyclopedia.com/entry/kjelgaard_jim
- Klacar, Pamela; [née Anderson] (fl. 1970s-1990s) (items) (chron.)
- See www.austlit.edu.au/austlit/page/A26208
- Klages, Ellen (Janeway) (1954- ) (items) (chron.)
- See en.wikipedia.org/wiki/Ellen_Klages
- Klapecki, S. J. (1999- ) (items)
- See sjklapecki.wordpress.com
- Klass, Judy; [i.e., Judith Alexandra Klass] (1967- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/klass_judy
- Klass, Philip J. (1919-2005) (items)
- See en.wikipedia.org/wiki/Philip_J._Klass
- Klatt, Herbert C. (1907-1928) (items) (chron.)
- See www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=64725780
- Klauba, Douglas C. (1963- ) (items) (chron.)
- See www.douglasklauba.com
- Klausner, Jack (fl. 2020s) (items) (chron.)
- See jackklausner.com
- Klaw, Rick; [i.e., Richard Ira Klaw] (1967- ) (items) (chron.)
- See en.wikipedia.org/wiki/Rick_Klaw
- Kleaton, Thomas (1964- ) (items) (chron.)
- See thomaskleaton.wordpress.com
- Klehr, Kevin (fl. 2020s) (items)
- See kevinklehr.com
- Kleijne, Floris M. (1970- ) (items) (chron.)
- See www.floriskleijne.com
- Klein, Gérard (1937- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/klein_gerard
- Klein-Dial, Judith (fl. 2000s-2010s) (items)
- See www.jandtbooks.com
- Kleinfeld, Lenny (fl. 1970s-2000s) (items) (chron.)
- See www.lennykleinfeld.com
- Kleinheincz, Csilla (fl. 2000s-2010s) (items) (chron.)
- See kleinheincz.wordpress.com
- Klestova, Oleksandra (fl. 2020s) (items) (chron.)
- See klestovaillustrator.myportfolio.com
- Kley, Heinrich (1863-1945) (items) (chron.)
- See en.wikipedia.org/wiki/Heinrich_Kley
- Kliban, B(ernard) (1935-1990) (items)
- See en.wikipedia.org/wiki/B._Kliban
- Klimt, Gustav (1862-1918) (items) (chron.)
- See en.wikipedia.org/wiki/Gustav_Klimt
- Kline, Allen S(ides) (1893-1971) (items) (chron.)
- See tellersofweirdtales.blogspot.com/2021/12/allen-s-kline-1893-1971.html
- Kline, Milton V(ance) (1923-2004) (items)
- See www.tandfonline.com/doi/abs/10.1080/00207140490883905?journalCode=nhyp20
- Kline, Otis Adelbert (1891-1946) (items) (chron.)
- See www.sf-encyclopedia.com/entry/kline_otis_adelbert
- Klinkner, Anthony F.; [born Anton F. Klinkner] (1880-1953) (items) (chron.)
- See tellersofweirdtales.blogspot.co.uk/2016/04/anthony-f-klinkner-1880-1953.html
- Kloor, Harry “Doc” (1963- ) (items)
- See en.wikipedia.org/wiki/Harry_Kloor
- Kloos, Marko (fl. 2010s-2020s) (items) (chron.)
- See www.markokloos.com
- Kloster, Gary (fl. 2000s-2010s) (items) (chron.)
- See www.garykloster.com
- Kluger, Jeffrey (1954- ) (items)
- See en.wikipedia.org/wiki/Jeffrey_Kluger
- Klune, T(ravis) J(ohn) (1982- ) (items)
- See en.wikipedia.org/wiki/TJ_Klune
- Kluwe, Chris (1981- ) (items) (chron.)
- See en.wikipedia.org/wiki/Chris_Kluwe
- Knapp, Michaelsun (fl. 2010s) (items) (chron.)
- See sites.google.com/a/newmyths.com/nmwebsite/contributors/michaelsun-knapp
- Knauf, Daniel (fl. 1980s-2010s) (items) (chron.)
- See en.wikipedia.org/wiki/Daniel_Knauf
- Knave, Adam P. (fl. 2000s-2010s) (items) (chron.)
- See www.adampknave.com
- Kneale, Heidi Wessman (fl. 2000s-2010s) (items) (chron.)
- See members.iinet.net.au/~damian/heidikneale
- Kneale, (Thomas) Nigel (1922-2006) (items) (chron.)
- See en.wikipedia.org/wiki/Nigel_Kneale
- Knebel, Fletcher (1911-1993) (items)
- See www.sf-encyclopedia.com/entry/knebel_fletcher
- Knez, Dora (fl. 1990s-2000s) (items) (chron.)
- See www.sfsite.com/04b/fft102.htm
- Knickel, Alexandra (fl. 2010s) (items)
- See www.deviantart.com/aruyinn
- Knickrehm, Darryl (fl. 2010s) (items) (chron.)
- See knickrehm.blogspot.co.uk
- Kniffin, Harry Anable (1876-1939) (items) (chron.)
- See tellersofweirdtales.blogspot.co.uk/2011/05/harry-anable-kniffin-1876.html
- Knigge, Andreas C. (1957- ) (items)
- See de.wikipedia.org/wiki/Andreas_C._Knigge
- Knight, Amitha Jagannath (fl. 2010s-2020s) (items) (chron.)
- See www.amithaknight.com
- Knight, Charles R(obert) (1874-1953) (items) (chron.)
- See en.wikipedia.org/wiki/Charles_R._Knight
- Knight, Chelene (fl. 2000s-2020s) (items) (chron.)
- See www.cheleneknight.com
- Knight, Clifford (Reynolds) (1886-1963) (items) (chron.)
- 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); used pseudonym Donald Laverty (items) (chron.)
- See www.sf-encyclopedia.com/entry/knight_damon
- Knight, E. E.; pseudonym of Eric Frisch (1965- ) (items) (chron.)
- See en.wikipedia.org/wiki/E._E._Knight
- Knight, John Alden (1890-1966) (items)
- Novelist, sportsman, author. Died in Islamorada, Florida.
- Knight, Jonah (fl. 2000s-2010s) (items)
- See www.jonahofthesea.com
- Knight, L. A. (fl. 2010s-2020s) (items) (chron.)
- See la-knight.tumblr.com
- Knight, Lena Alison (fl. 2020s) (items) (chron.)
- See www.lenaalisonknight.com
- Knight, Norman L(ouis) (1895-1972) (items) (chron.)
- See www.sf-encyclopedia.com/entry/knight_norman_l
- Knight, Raymond (1899-1953) (items) (chron.)
- See en.wikipedia.org/wiki/Raymond_Knight_(radio)
- Knight, Sam (fl. 2010s) (items) (chron.)
- See samknight.com
- Knight, Shauna Aura (fl. 2010s) (items) (chron.)
- See www.shaunaauraknight.com
- Knight, Zelda (fl. 2010s-2020s) (items) (chron.)
- See zeldaknight.com
- Knighton, Andrew (fl. 2000s-2020s) (items) (chron.)
- See andrewknighton.com
- Knippling, DeAnna (fl. 2010s-2020s) (items) (chron.)
- See wonderlandpress.com
- Knobloch, Victoria Jakes (1989- ) (items) (chron.)
- See victoriajakes.com/bio
- Knolan, Kellen (fl. 2010s) (items) (chron.)
- See kellenknolan.com
- Knoles, William (Henley) (1926-1972) (items) (chron.)
- See efanzines.com/EK/eI7/index.htm
- Knoll, Tricia (fl. 2010s) (items) (chron.)
- See triciaknoll.com
- Knowles, Brent (fl. 2000s-2010s) (items) (chron.)
- See en.wikipedia.org/wiki/Brent_Knowles
- Knowles, T. W., II (fl. 1990s) (items) (chron.)
- See www.goodreads.com/author/show/295799.Thomas_W_Knowles
- Knox, Hugh Randolph (1942-2011) (items) (chron.)
- See sf-encyclopedia.com/entry/knox_hugh