- Lindsay, Jeffry P.; pseudonym of Jeffry P. Freundlich (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lindsay_jeffry_p
- Lindsay, Philip (1906-1958) (stories)
- Born in Sydney, Australia.
- Lindsay, Ryan K. (fl. 2010s) (stories)
- See ryanklindsay.com
- Linford, Dee [i.e., Deverl Hess Linford] (1915-1971) (stories)
- See pulpflakes.blogspot.co.uk/2016/10/dee-linford-western-author-journalist.html
- Linington, (Barbara) Elizabeth (1921-1988) (stories) (assoc.)
- All titles published in the U.S. as by Elizabeth Linington are issued in England as by Anne Blaisdell.
- Lipinski, Thomas (1954- ) (stories) (assoc.)
- Has MFA from U. of Pittsburgh; once an insurance investigator; teaches college creative writing courses.
- Lipman, William R. (1894-1951) (stories)
- Born in New York City; died in Los Angeles; a screenwriter.
- Lippman, Laura (1959- ) (stories) (assoc.)
- Reporter for the Baltimore Sun.
- Liskey, Tom Darin (fl. 2010s) (stories)
- See www.tomdarinphoto.com
- Liss, S. Frederic (fl. 1990s-2010s) (stories)
- See www.saturdayeveningpost.com/author/s-frederic-liss
- Lister, Michael (1968- ) (stories)
- Prison chaplain in Florida turned writer and college professor.
- Litsey, Edwin Carlile (1874-1970) (stories)
- See de.wikipedia.org/wiki/Edwin_Carlile_Litsey
- Litt, Toby (1968- ) (stories)
- See www.sf-encyclopedia.com/entry/litt_toby
- Littell, Edmund M. (1890-1970) (stories)
- Michigan traveller and writer.
- Littke, Lael J(ensen) (1929- ) (stories)
- See en.wikipedia.org/wiki/Lael_Littke
- Littlefield, Sophie (fl. 2000s-2010s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/littlefield_sophie
- Littlepage, Layne (1950- ) (stories)
- Born in California; living in New York City.
- Littlewood, Alison (J.) (fl. 2000s-2010s) (stories)
- See www.alisonlittlewood.co.uk
- Livingston, (Robert) Armstrong (Jr.) (1885-?) (stories)
- Born in New York City; educated at St. Georges School, Newport, Rhode Island; entered insurance business with Queen Insurance Company and then went into the brokerage business for himself.
- Livingston, Berkeley (1909-1975) (stories)
- See www.sf-encyclopedia.com/entry/livingston_berkeley
- Lloyd, Stanley (1880-1954?) (art)
- Born in Liverpool, England; well known book illustrator.
- Lobo, D. (fl. 2010s) (art)
- See onelobo.com
- Locke, William J(ohn) (1863-1930) (stories)
- Born in British Guiana of English parents; educated in Trinidad and Cambridge; novelist and playwright; was a teacher in early career; in later life lived on the continent, especially on the Riviera.
- Lodi, Edward (fl. 1980s-2000s) (stories)
- See www.pw.org/content/edward_lodi_1
- Loehfelm, Bill (fl. 2000s-2010s) (stories)
- See billloehfelm.tumblr.com/authorbio
- Lofficier, Jean-Marc (1954- ) (stories)
- See www.sf-encyclopedia.com/entry/lofficier_jean-marc
- Lofts, Norah (Ethel, née Robinson) (1904-1983) (stories)
- Note: Lofts was the name of her first husband; after he died and she married Robert Jorisch she continued to write as Lofts which then became a sort of pseudonym.
- Logan, Margaret (1936- ) (stories)
- Living in Boston.
- Loggia, Robert [born Salvatore Loggia] (1930-2015) (stories) (assoc.)
- See en.wikipedia.org/wiki/Robert_Loggia
- London, Jack [born John Griffith Chaney] (1876-1916) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jack_London
- Long, Amelia Reynolds (1904-1978) (stories)
- See tellersofweirdtales.blogspot.co.uk/2015/03/amelia-reynolds-long-1904-1978.html
- Long, Christopher E. (fl. 2010s) (stories)
- See christopherelong.com
- Long, Frank Belknap (Jr.) (1903-1994) (stories)
- See www.sf-encyclopedia.com/entry/long_frank_belknap
- Long, Gabrielle M(argaret) V(ere, née Campbell) (1885-1952) (stories)
- Born in Hayling; birth registered as Margaret Gabrielle Vere Campbell. Daughter of Mrs. Vere Campbell.
- Long, H(erbert) Kingsley (1890-1964) (stories)
- Born in India.
- Long, James Parker (1890?-1970) (stories)
- Insurance executive. Born in Rangoon, Burma; died in Naples, New York.
- Long, Julius (W.) (1907-1955) (stories)
- Magazine writer. Born in Ohio; studied law; admitted to the Ohio bar and practiced law in that state.
- Long, Manning (1906- ) (stories)
- Born in Chase City, Virginia, on 3/4/1906; married Peter Wentworth Williams on 5/23/1944. No further details found. Note: Her husband Peter Wentworth Williams was a noted ceramist who designed the Mystery Writers of Americas Edgar Award.
- Long, Nat(haniel John) (1893-1955) (art)
- See bearalley.blogspot.com/2018/09/nat-long.html
- Long, Richard (fl. 2010s) (stories) (assoc.)
- See www.thebookofpaul.com/about-me
- Longenbaugh, John (fl. 2010s) (stories)
- See johnlongenbaugh.com
- Longfellow, Henry Wadsworth (1807-1882) (stories)
- See en.wikipedia.org/wiki/Henry_Wadsworth_Longfellow
- Longstreet, Stephen [born Chauncey Weiner] (1907-2002) (stories)
- See www.stephenlongstreet.com/
- Longstreth, T(homas) Morris (1886-1975) (stories)
- See www.sf-encyclopedia.com/entry/longstreth_t_morris
- Longyear, Barry B(rookes) (1942- ) (stories)
- See www.sf-encyclopedia.com/entry/longyear_barry_b
- Loomis, Noel (Miller) (1905-1969) (stories)
- See www.sf-encyclopedia.com/entry/loomis_noel
- Lopresti, Robert (fl. 1970s-2010s) (stories) (assoc.)
- See home.nas.com/lopresti
- Lord, Gabrielle (Craig) (1946- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lord_gabrielle
- Lostutter, Melvin (Simmons) (1895-1958) (stories)
- Columbus, Indiana newspaperman; wrote pulp stories of WWI while belatedly attending U of New Mexico; ended career as professor of journalism at Michigan State; died on vacation in Canada.
- Lott, D. Lee (fl. 2010s) (stories)
- See www.smashwords.com/profile/view/dleelott
- Louganis, Greg(ory Efthimios) (1960- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Greg_Louganis
- Lough, Glenn Dale (1906-1991) (stories)
- See www.mysteryfile.com/GLow/Author.html
- Loughran, Rob(ert J.) (fl. 1990s-2010s) (stories)
- See foulmouthedbard.blogspot.co.uk
- Love, Dru Ann (fl. 2010s) (stories) (assoc.)
- See drusbookmusing.com
- Lovecraft, H(oward) P(hillips) (1890-1937) (stories) (assoc.)
- See en.wikipedia.org/wiki/H._P._Lovecraft
- Lovegrove, James (Matthew Henry) (1965- ) (stories)
- See www.sf-encyclopedia.com/entry/lovegrove_james
- Lovelace, Delos W(heeler) (1894-1967) (stories)
- See www.sf-encyclopedia.com/entry/lovelace_delos_w
- Loveland, Patrick (fl. 2010s) (stories)
- See patrickloveland.com
- Lovell, Tom [i.e., Thomas Lovell] (1909-1997) (art)
- See pulpartists.com/Lovell.html
- Lovesey, Phil(ip Lear) (1963- ) (stories)
- Media graduate and former advertising copywriter.
- Lovisi, Gary (Anthony) (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovisi_gary
- Lowall, Gene (1905-1975) (stories)
- Investigative crime reporter. Born in Aurora, Illinois; died in New York City.
- Lowd, Mary E. (fl. 2000s-2010s) (stories)
- See marylowd.com
- Lowe, Hugh Maxwell (1914-2002) (stories)
- See bearalley.blogspot.co.uk/2014/08/hugh-maxwell-lowe.html
- Lowe, Sheila (fl. 1990s-2010s) (stories)
- See en.wikipedia.org/wiki/Sheila_Lowe
- Lowndes, Robert A(ugustine) W(ard) (1916-1998) (stories)
- See www.sf-encyclopedia.com/entry/lowndes_robert_a_w
- Lowrance, Heath (fl. 2010s) (stories)
- See psychonoir.blogspot.co.uk
- Luberoff, William E(dward) (1910-2002) (art)
- See pulpartists.com/Luberoff.html
- Lucas, (John) Cary (1907-1961) (stories)
- Born in New Jersey; died in San Francisco.
- Lucas, Netley (Evelyn) (1903-1940) (stories)
- See bearalley.blogspot.co.uk/2008/09/netley-lucas.html
- Ludens, Adrian W. (fl. 2000s-2010s) (stories)
- See www.adrianludens.com
- Ludlum, Robert (1927-2001) (stories) (assoc.)
- See en.wikipedia.org/wiki/Robert_Ludlum
- Ludwig, Avram Noble (fl. 2010s) (stories)
- See www.avramnobleludwig.com
- Ludwig, Edward W(illiam) (1920-1990) (stories)
- See www.sf-encyclopedia.com/entry/ludwig_edward_w
- Ludwigsen, Will (fl. 2000s-2010s) (stories)
- See www.sf-encyclopedia.com/entry/ludwigsen_will
- Luehrmann, Adele (fl. 1910s-1920s) (stories)
- Born in Memphis, Tennessee around 1878 and associated with the class of 1896, Vassar College; living n New York City in 1930.
- Lull, Roderick (Allyn) (1907-1966) (stories)
- Born in San Francisco; lived in Oregon.
- Lundgren, Carl (1947- ) (art)
- See en.wikipedia.org/wiki/Carl_Lundgren_(illustrator)
- Lundgren, Eric [i.e., Bertil Erik Karl Lundgren] (1906-1971) (art)
- See pulpartists.com/Lundgren.html
- Lupoff, Richard A(llen) (1935- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lupoff_richard_a
- Luros, Milton [born Milton Louis Rosenblatt] (1911-1999) (art)
- See pulpartists.com/Luros.html
- Lustbader, Eric Van (1946- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lustbader_eric_van
- Lutz, Giles A(lfred) (1910-1982) (stories)
- See en.wikipedia.org/wiki/Giles_A._Lutz
- Lutz, Lisa (1970- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Lisa_Lutz
- Lyall, Francis (1940- ) (stories)
- Professor at Aberdeen University in Scotland.
- Lybeck, Alvin H(iggins) (1919-2009) (stories)
- See www.wsclancy.com/obituary/Alvin-Higgins-Lybeck/Branford-CT/661167
- Lybeck, Ed(ward Arvid) [born Charles Edward Widegren] (1905-1965) (stories)
- Born in North Shields, UK, parents separated when he was a toddler, and he went to live with his grandparents in Sweden. At age 6, his mother came and brought him to her home in the USA. Adopted by his stepfather in October 1912. Earlier that year, his birth father had died in the sinking of the Titanic.
- Lydig, Rita [i.e., Mrs. Phillip Lydig, born Rita Hernandez de Alba de Acosta] (1875-1929) (stories)
- See en.wikipedia.org/wiki/Rita_de_Acosta_Lydig
- Lyle, D. P., M.D. (fl. 2000s-2010s) (stories) (assoc.)
- See www.dplylemd.com
- Lyle, Eugene P(ercy, Jr.) (1873-1962) (stories)
- See www.sf-encyclopedia.com/entry/lyle_eugene_p_jr
- Lynch, (John Gilbert) Bohun (1884-1928) (stories)
- See www.sf-encyclopedia.com/entry/lynch_bohun
- Lynch, Mark Patrick (fl. 2000s-2010s) (stories)
- See www.markpatricklynch.blogspot.co.uk
- Lynch-Harris, Ashley (fl. 2010s) (stories)
- See www.ashleylynchharris.com
- Lynds, Dennis (1924-2005) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lynds_dennis
- Lynds, Gayle (Hallenbeck) (1950- ) (stories) (assoc.)
- Born in Omaha, Nebraska.
- Lyon, Carl (1903-1982) (art)
- See www.austlit.edu.au/austlit/page/A43044
- Lyon, (Mabel) Dana (1897-1982) (stories)
- Californian; born in Germany.