- Kretz, Ed, Jr. (1932- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Ed_Kretz_Jr.
- Kreutzer, Rodolphe (1766-1831) (stories)
- See en.wikipedia.org/wiki/Rodolphe_Kreutzer
- Krick, Irving P. (1906-1966) (stories) (assoc.)
- See en.wikipedia.org/wiki/Irving_P._Krick
- Krieg, Vaughn [i.e., Vaughn Krieg Huskey] (1904-1976) (stories)
- See www.cowgirl.net/portfolios/vaughn-krieg-huskey
- Krieghoff, William George (1875-1930) (art)
- See www.askart.com/artist/William_George_Krieghoff/108333/William_George_Krieghoff.aspx
- Kriesel, Michael ({c}1963- ) (stories)
- See www.bookthatpoet.com/poets/krieselm.html
- Krigstein, Bernard (1919-1990) (art)
- See en.wikipedia.org/wiki/Bernard_Krigstein
- Krinard, Susan (fl. 1980s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Susan_Krinard
- Kring, Michael K. (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kring_michael_k
- Krinov, E. L. [i.e., Yevgeny Leonidovich Krinov] (1906-1984) (stories) (assoc.)
- See en.wikipedia.org/wiki/Yevgeny_Krinov
- Krippene, Ken (?-1980) (stories) (art)
- Writer, trained as a lawyer; married to Jane Dolinger. Born in Oshkosh, Wisconsin.
- Krisch, Glen R. (fl. 2000s-2010s) (stories)
- See glenkrisch.wordpress.com
- Krist, Gary (Michael) (1957- ) (stories)
- Journalist and critic living in Maryland.
- Kristjansson, Snorri (1974- ) (stories) (assoc.)
- See snorrikristjansson.com
- Kristoff, Jay (1973- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jay_Kristoff
- Kritzer, Naomi (fl. 2000s-2010s) (stories) (assoc.)
- See www.naomikritzer.com
- Krizan, Vladimir (fl. 2010s) (art)
- See sketchboook.deviantart.com
- Kroder, Conroy (fl. 1920s) (stories)
- Journalist and traveller.
- Krog, Robert J. (fl. 2010s) (stories)
- See krogfiction.yolasite.com
- Krohn, Jennifer Lynn (fl. 2010s) (stories)
- See outsideofparnassus.wordpress.com
- Krohn, Leena (1947- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Leena_Krohn
- Kroik, Jenny (fl. 2010s) (art)
- See www.jennykroik.com
- Krolicki, Neil (1976- ) (stories)
- See www.neilkrolicki.com
- Kroll, Ernest (1914-1995) (stories)
- See prabook.com/web/ernest.kroll/357582
- Kroll, Harry Harrison (1888-1967) (stories) (assoc.)
- Lived as a child in Dyersburg, Tennessee, and teens and young adult in Alabama; school teacher in Alabama though without formal education, then obtained degrees from Peabody College for Teachers in Nashville; taught English composition and literature at University of Tennessee and Lincoln Memorial University; published over 900 pieces of short fiction and essays and 27 novels.
- Kroneman, Olaf (fl. 2010s) (stories)
- See olafkroneman.com
- Kronmuller, Hildgarde (1906-1976) (stories)
- Born in Baltimore.
- Krosinsky, Sari (fl. 2010s) (stories)
- See outerchildpoetry.com
- Krsteski, Damien (fl. 2010s) (stories)
- See monochromewish.blogspot.co.uk
- Kruell, Gustave (1843-1907) (art)
- See en.wikipedia.org/wiki/Gustav_Kruell
- Krupa, Julian S. (1913-1989) (stories) (art)
- See sticklersworld.blogspot.co.uk/2006/03/julian-krupa-man-legend.html
- Kruse, John (1921-2004) (stories) (assoc.)
- See en.wikipedia.org/wiki/John_Kruse
- Krusoe, Jim (fl. 1990s-2010s) (stories)
- See en.wikipedia.org/wiki/Jim_Krusoe
- Krusz, Arthur (J.) (1926-2014) (art)
- See www.grossepointenews.com/Obituary-41209.114135-Arthur-J-Krusz.html
- Kube-McDowell, Michael P(aul) (1954- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kube-mcdowell_michael_p
- Kubilius, Walter (1918-1993) (stories)
- See www.sf-encyclopedia.com/entry/kubilius_walter
- Kubuitsile, Lauri (fl. 2000s-2010s) (stories)
- See thoughtsfrombotswana.blogspot.com
- Kuebler, Carolyn (fl. 2010s) (stories)
- See www.nereview.com/carolyn-kuebler
- Kuehn, Susan (Elizabeth) (1927- ) (stories)
- See www.writinguniversity.org/writers/susan-boyd
- Kuehnle, R(obert) D(alby) (1918-2009) (stories)
- See www.findagrave.com/memorial/111301064/robert-dalby-kuehnle
- Kuhl, Jackson (fl. 1990s-2010s) (stories)
- See www.jacksonkuhl.com/blog
- Kuhlhoff, Pete [i.e., Elbert Herman Kuhlhoff] (1903-1972) (stories) (art) (assoc.)
- See pulpartists.com/Kuhlhoff.html
- Kuhn, Bob (F.) (1920-2007) (stories) (art) (assoc.)
- Born in Buffalo, New York.
- Kuhn, Irene (Corbally) (1898-1995) (stories)
- See www.encyclopedia.com/women/encyclopedias-almanacs-transcripts-and-maps/kuhn-irene-corbally-1898-1995
- Kuhn, Sarah (fl. 2010s) (stories) (assoc.)
- See www.alertnerd.com/?page_id=3607
- Kuhn, Tom (fl. 2010s) (stories)
- See www.mod-langs.ox.ac.uk/people/tom-kuhn
- Kuhring, Ludwig Paul (1890-?) (stories)
- Writer; spent time in the armed forces and working in construction. Born in Toronto, Canada; lived in Ottawa, Canada.
- Kuilboer, Leigh (fl. 2010s) (art)
- See www.malicious.com.au
- Kuiper, Gerard P(eter) (1905-1973) (stories) (assoc.)
- See en.wikipedia.org/wiki/Gerard_Kuiper
- Kūkai (774-835) (stories)
- See en.wikipedia.org/wiki/K%C5%ABkai
- Kukalis, Romas B(randt) (1956- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Romas_Kukalis
- Kull, George F(rederick?) (1911-1963) (stories)
- Born in Buffalo, New York; died in Riverside, California.
- Kullstroem, Chris (fl. 2010s) (stories) (assoc.)
- See monstersandbooks.com
- Kum, Tessa (1981- ) (stories)
- See silence-without.blogspot.co.uk
- Kumarasamy, Akil (fl. 2010s) (stories)
- See akilk.com/home/
- Kumashov, M(isha) Dimitri (1955- ) (stories) (art)
- also known as Michael Kumashov.
- Kummer, Frederic Arnold (Sr.) (1873-1943) (stories) (assoc.)
- Born in Catonsville, Maryland; educated at Renssaeler Polytechnic Institute; civil engineer, amateur artist, novelist and playwright; contributed to all major magazines; died in Baltimore, Maryland.
- Kunder, Fred; house pseudonym (fl. 1960s) (stories)
- A house pseudonym used by Popular Publications.
- Kuno, Olga (fl. 2010s) (stories)
- See www.goodreads.com/author/show/15296298.Olga_Kuno
- Künsken, Derek (Stéphane) (1971- ) (stories) (assoc.)
- See www.beneath-ceaseless-skies.com/authors/derek-kunsken/
- Kunstler, James Howard (1948- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/James_Howard_Kunstler
- Künstler, Morton (1931- ) (art)
- See en.wikipedia.org/wiki/Mort_K%C3%BCnstler
- Kunzru, Hari (Mohan Nath) (1969- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Hari_Kunzru
- Kupfer, Fern (1946- ) (stories)
- See en.wikipedia.org/wiki/Fern_Kupfer
- Kupperberg, Alan (1953-2015) (art)
- See en.wikipedia.org/wiki/Alan_Kupperberg
- Kuppers, Petra (1968- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Petra_Kuppers
- Kuppord, Skelton; pseudonym of John Adams (1857-1934) (stories)
- See www.sf-encyclopedia.com/entry/kuppord_skelton
- Kupris, Valdis (Osvalds) (1940-2004) (art)
- See www.legacy.com/obituaries/hartfordcourant/obituary.aspx?n=valdis-osvalds-kupris&pid=2257106
- Kurahashi, Yumiko (1935-2005) (stories) (assoc.)
- See en.wikipedia.org/wiki/Yumiko_Kurahashi
- Kureishi, Hanif (1954- ) (stories)
- See en.wikipedia.org/wiki/Hanif_Kureishi
- Kurella, Jordan (fl. 2010s) (stories)
- See www.jordankurella.com
- Kurisato, Mari (fl. 2000s-2010s) (stories) (art)
- See www.polychromantium.com
- Kurland, Michael J(oseph) (1938- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kurland_michael
- Kurowski, Cliff (fl. 1970s-2010s) (art)
- See www.deviantart.com/cliffk
- Kürsteiner, Jean Paul (1864-1943) (stories)
- See en.wikipedia.org/wiki/Jean_Paul_Kürsteiner
- Kurtén, Björn (Olof Lennartson) (1924-1988) (stories) (assoc.)
- See en.wikipedia.org/wiki/Bj%C3%B6rn_Kurt%C3%A9n
- Kurtz, Ed (fl. 2010s) (stories)
- See edkurtz.net
- Kurtz, Henry I. (fl. 1960s) (stories)
- Expert on military history.
- Kurtz, Katherine (Irene) (1944- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kurtz_katherine
- Kurtz, Nicole Givens (fl. 2000s-2010s) (stories)
- See nicolegivenskurtz.com
- Kuryla, Mary (fl. 2000s-2010s) (stories)
- See marykuryla.com
- Kurz, (Maria Clara) Isolde (1853-1944) (stories)
- See en.wikipedia.org/wiki/Isolde_Kurz
- Kurzawa, Greg; pseudonym of Gage Kurricke (fl. 2000s-2010s) (stories)
- See www.gregkurzawa.com
- Kusano, Iori (fl. 2010s) (stories)
- See kusanoiori.wordpress.com
- Kushner, Rachel (1968- ) (stories)
- See en.wikipedia.org/wiki/Rachel_Kushner
- Kuslan, Louis (1922-2015) (stories)
- See fancyclopedia.org/louis-kuslan
- Kusnet, Morr [born Morris Kusnetzov] (1908-1990) (art)
- See pulpartists.com/Kusnet.html
- Kussi, Peter (?-2012) (stories)
- See en.wikipedia.org/wiki/Peter_Kussi
- Kuttner, Henry (1915-1958) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kuttner_henry
- Kuykendall, Alla Ray (Elliott) (1892-1988) (stories)
- See rehtwogunraconteur.com/remembering-the-kuykendalls-of-ranger/
- Kuykendall, (Fanita) Karen ({c}1928-1998) (stories) (assoc.)
- See www.rambles.net/kuykendall_cattarot.html
- Kuzneski, Chris (D.) (1969- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Chris_Kuzneski
- Kwaymullina, Ambelin (fl. 2010s) (stories)
- See en.wikipedia.org/wiki/Ambelin_Kwaymullina
- Kwon, Reese Okyong (fl. 2010s) (stories)
- See ro-kwon.com
- Kyle, David A(ckerman) (1919-2016) (stories) (art) (assoc.)
- See www.sf-encyclopedia.com/entry/kyle_david_a
- Kyle, Richard (1929-2016) (stories)
- See comic-con.wikia.com/wiki/Richard_Kyle
- Kyme, Nick (fl. 2000s-2010s) (stories) (assoc.)
- See www.nickkyme.com/?page_id=2
- Kymmell-Harvey, Samantha (fl. 2010s) (stories) (assoc.)
- See samanthakymmell-harvey.blogspot.co.uk
- Kyne, Peter B(ernard) (1880-1957) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kyne_peter_b
- La Barbera, Patricia (fl. 2010s) (stories)
- See www.patricialabarbera.com
- La Barre, Harriet (1916-2015) (stories)
- See easthamptonstar.com/Obituaries/2015709/Harriet-La-Barre-Mystery-Novelist