- Kastin, Jonathan Lenore (fl. 2010s) (stories)
- See jonathanlenorekastin.com
- Kastin, Shawna Lenore (fl. 2010s) (stories)
- See shawnalenore.wordpress.com
- Kastle, Herbert D(avid) (1924-1987) (stories)
- See lynn-munroe-books.com/list59/herbertkastle.htm
- Katnik, Don (fl. 2000s-2010s) (stories)
- See thebark.com/content/qa-don-katnik
- Katsu, Alma (fl. 2010s) (stories) (assoc.)
- See www.almakatsu.com
- Katz, Andrew (fl. 2010s) (stories) (assoc.)
- See www.goodreads.com/author/show/299426.Andrew_Katz
- Katz, Arnold (fl. 1960s-1990s) (stories)
- See fancyclopedia.org/arnie-katz
- Katz, Jack (1927- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jack_Katz_(artist)
- Kaufman, Amie (fl. 2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Amie_Kaufman
- Kaufman, Jerry (fl. 1960s-2010s) (stories)
- See fancyclopedia.org/jerry-kaufman
- Kaufman, Lloyd (1945- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Lloyd_Kaufman
- Kaufman, Pat(ricia Swinney) (1950- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Pat_Swinney_Kaufman
- Kaufman, Stephen (1947- ) (stories)
- See www.sf-encyclopedia.com/entry/river_uncle
- Kaufman, Will (fl. 2010s) (stories) (assoc.)
- See willarium.wordpress.com
- Kaufmann, Nicholas (fl. 2000s-2010s) (stories)
- See www.nicholaskaufmann.com
- Kaufmann, William J. (1942-1994) (stories) (assoc.)
- See aas.org/obituaries/william-j-kaufmann-iii-1942-1994
- Kavaler, Rebecca (1920-2008) (stories)
- See en.wikipedia.org/wiki/Rebecca_Kavaler
- Kavan, Anna; pseudonym of Helen Woods Edmonds (1901-1968) (stories) (assoc.)
- See en.wikipedia.org/wiki/Anna_Kavan
- Kaveney, Roz [legalized from Andrew J. Kaveney] (1949- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kaveney_roz
- Kavenna, Joanna (1974- ) (stories)
- See en.wikipedia.org/wiki/Joanna_Kavenna
- Kaye, Andrew (fl. 2010s) (stories) (assoc.)
- See andrewkaye.livejournal.com
- Kaye, Blaize M. (fl. 2010s) (stories)
- See bomoko.net
- Kaye, Marco (fl. 2010s) (stories)
- See okmak.com/About-Marco-Kaye
- Kaye, Marvin (Nathan) (1938- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kaye_marvin
- Kaye, Phyllis L.; pseudonym (stories)
- of Ed Burkholder or Walter B. Gibson.
- Kayembe, Kathleen (fl. 2010s) (stories)
- See kathleenkayembe.wordpress.com
- Kayser, Ronal (1905-1988) (stories)
- Writer and journalist. Born in the midwestern United States; lived in La Jolla, California.
- Kaysing, Bill [i.e., William Charles Kaysing] (1922-2005) (stories) (assoc.)
- See en.wikipedia.org/wiki/Bill_Kaysing
- Kazepis, Michael (fl. 2010s) (stories)
- See mkzp.tumblr.com/about
- Kean, Carol (fl. 2010s) (stories)
- See carolkean.wordpress.com
- Keating, H(enry) R(eymond) F(itzwalter) (1926-2011) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/keating_h_r_f
- Keaton, David James (fl. 2000s-2010s) (stories)
- See davidjameskeaton.com
- Keaton, M. (fl. 2000s-2010s) (stories)
- See en.wikipedia.org/wiki/M._Keaton
- Keats, John (1795-1821) (stories)
- See en.wikipedia.org/wiki/John_Keats
- Keck, David (fl. 1990s-2010s) (stories)
- See en.wikipedia.org/wiki/David_Keck
- Kee, Martin (fl. 2010s) (stories)
- See martinkeeis.me
- Keegan, Charles (fl. 1990s-2010s) (art)
- See charleskeegan.com
- Keeler, Harry Stephen (1889-1967) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/keeler_harry_stephen
- Keeley, Brendan (fl. 2010s) (art)
- See www.brendankeeley.co.uk
- Keenan, Michael (fl. 2010s) (stories)
- See www.michaelkeenanpoetry.com
- Keene, Day; pseudonym of Gunard Hjertstedt (1904-1969) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/keene_day
- Keith, Mike (fl. 2000s) (stories)
- See www.cadaeic.net
- Keith, William H(enry), Jr. (1950- ) (stories)
- See www.sf-encyclopedia.com/entry/keith_william_h_jr
- Kek-w (fl. 2000s-2010s) (stories)
- See www.goodreads.com/author/show/1639969.Kek_w
- Kelleam, Joseph E(veridge) (1913-1975) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kelleam_joseph_e
- Kelleher, Victor (Michael Kitchener) (1939- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kelleher_victor
- Keller, David H(enry), M.D. (1880-1966) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/keller_david_h_m_d
- Keller, H(arry) A. (1894-1973?) (stories)
- Born in Philadelphia. Editor of mystery and detective story magazines.
- Keller, Noah (fl. 2010s) (stories)
- See us.macmillan.com/author/noahkeller
- Kelley, Brent Michael (fl. 2010s) (stories)
- See www.catbat.com/bmk/
- Kelley, (William) Hubert (1899-1959) (stories)
- Poet, playwright, editor, reporter. Died in Nyack, New York.
- Kelley, Jennifer Adams (1963-2019) (stories) (assoc.)
- See www.legacy.com/obituaries/sfgate/obituary.aspx?n=jennifer-kelley&pid=191781089&fhid=16976
- Kelley, Leo P(atrick) (1928-2002) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kelley_leo_p
- Kelley, Thomas P(atrick) (1905-1982) (stories)
- See www.sf-encyclopedia.com/entry/kelley_thomas_p
- Kellogg, Elijah (Jr.) (1813-1901) (stories)
- See en.wikipedia.org/wiki/Elijah_Kellogg
- Kellogg, Joseph L. (fl. 2010s) (stories)
- See lakesidecircus.com/jkellogg
- Kellogg, M(arjorie) Bradley (1946- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kellogg_marjorie_bradley
- Kelly, Damien (fl. 2000s-2010s) (stories)
- See damosays.com
- Kelly, Frank K(ing) (1914-2010) (stories)
- See www.sf-encyclopedia.com/entry/kelly_frank_k
- Kelly, James Patrick (1951- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kelly_james_patrick
- Kelly, Maria (fl. 2010s) (stories)
- See mxkelly.weebly.com
- Kelly, Robert (1935- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kelly_robert
- Kelman, Nic (1971- ) (stories)
- See en.wikipedia.org/wiki/Nic_Kelman
- Kelso, Chris (1988- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Chris_Kelso
- Kemp, C. I. (fl. 2010s) (stories)
- See www.ci-kemp.com
- Kemp, Chaz (fl. 2010s) (art)
- See www.chazkemp.com
- Kemp, H(arold) S(tuart) M(iller) (1892-?) (stories)
- Writer. Born in England, lived in Canada.
- Kemp, Harry (Hibbard) (1883-1960) (stories)
- Poet and writer. Born in Youngstown, Ohio; died in Provincetown, Massachusetts.
- Kemp, Jonathan (1967- ) (stories)
- See www.jonathan-kemp.com
- Kemp, Juliet (fl. 2010s) (stories)
- See www.julietkemp.com
- Kemper, Erinn L. (fl. 2010s) (stories)
- See erinnkemper.com
- Kempshall, Pete (fl. 2000s-2010s) (stories)
- See www.tyrannyoftheblankpage.blogspot.co.uk
- Kendall, David (fl. 2000s) (stories) (art) (assoc.)
- See www.rustybaby.com
- Kendall, May [born Emma Goldworth Kendall] (1861-1943) (stories)
- See en.wikipedia.org/wiki/May_Kendall
- Kendall, Rachel ({c}1975- ) (stories) (assoc.)
- See www.kissthewitch.co.uk
- Kenitz, Daniel (fl. 2010s) (stories)
- See www.danielkenitz.com
- Kennealy, Patricia [i.e., Patricia Kennealy-Morrison] (1946- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kennealy_patricia
- Kennedy, Jay (Malcolm) (1956-2007) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jay_Kennedy
- Kennedy, Jeffe (fl. 2000s-2010s) (stories)
- See www.jeffekennedy.com
- Kennedy, John (1945-2009) (stories)
- See www.sf-encyclopedia.com/entry/kennedy_john
- Kennedy, Leigh (1951- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kennedy_leigh
- Kennedy, Seth W. (fl. 2010s) (stories)
- See sethkennedy.com
- Kennedy, Thomas E. (1944- ) (stories)
- See www.thomasekennedy.com
- Kennedy, William Sloane (1850-1929) (stories)
- See www.whitmanarchive.org/criticism/current/encyclopedia/entry_99.html
- Kennedy-ONeill, Joy (fl. 2010s) (stories)
- See joykennedyoneill.com
- Kennett, Rick(y) (1956- ) (stories)
- Motorcycle carrier in Melbourne.
- Kennett, Shirley (Ann) (1951- ) (stories)
- Corporate computer specialist.
- Kenney, Douglas C. (1946-1980) (stories) (assoc.)
- See en.wikipedia.org/wiki/Douglas_Kenney
- Kenny, John (fl. 1980s-2010s) (stories) (art) (assoc.)
- See johnrichardkenny.com
- Kenny, Steven (1962- ) (art)
- See www.stevenkenny.com
- Kensch, Otto; house pseudonym (stories)
- See www.sf-encyclopedia.com/entry/kensch_otto
- Kent, Kelvin; joint pseudonym of Arthur K. Barnes (1911-1969) & Henry Kuttner (1915-1958) (stories)
- See www.sf-encyclopedia.com/entry/kent_kelvin
- Kenyon, Ernest M(onroe) (1920-1980?) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kenyon_ernest_m
- Kenyon, Kay [i.e., Katherine L. Kenyon Overcast] (1956- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/kenyon_kay
- Kenyon, Nate (fl. 2000s-2010s) (stories)
- See en.wikipedia.org/wiki/Nate_Kenyon
- Kenyon, Sherrilyn (1965- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Sherrilyn_Kenyon
- Kenyon, Theda (1894-1977) (stories)
- See tellersofweirdtales.blogspot.co.uk/2011/05/theda-kenyon-1894-1997.html
- Keogh, Anthony D. (1900-1972) (stories)
- See tellersofweirdtales.blogspot.com/2013/11/anthony-d-keogh-1900-1972.html
- Kepfield, Sam S. (fl. 2000s-2010s) (stories)
- See www.smashwords.com/profile/view/samkepfield
- Kepner, Linda Tiernan (fl. 1990s) (stories)
- See www.lindatkepner.com
- Kepnes, Caroline (1976- ) (stories) (assoc.)
- See www.carolinekepnes.com
- Kermit, Lance; house pseudonym (fl. 1940s-1960s) (stories)
- A house pseudonym of Popular Publications, used by at least fifteen people in as many different magazines. Alden Norton wrote two pieces; it is possible that Roy Ald is responsible for the remaining piece.
- Kernahan, Mrs. Coulson [i.e., Mary Jean Hickling Bettany Gwynne Kernahan] (1857-1941) (stories)
- Born in Staffordshire.
- Kernot, David (fl. 2000s-2010s) (stories) (assoc.)
- See www.davidkernot.com