- Livingston, Alex (fl. 2010s) (stories)
- See galaxyalex.com
- 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
- Livingston, Harold (1924- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/livingston_harold
- Livingston, Michael (fl. 2000s-2010s) (stories)
- See www.michaellivingston.com
- Livingstone, Ian (1949- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/livingstone_ian
- Livoni, Cathy (Ann) (1956- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/livoni_cathy
- Liyuan, Jia (fl. 2010s) (stories)
- See www.sf-encyclopedia.com/entry/fei_dao
- Ljeskovac, Sara (fl. 2010s) (art)
- See www.saraljart.com
- Llamas, Florent (fl. 2010s) (art)
- See florentllamas.deviantart.com
- Llewellyn, David (1978- ) (stories)
- See en.wikipedia.org/wiki/David_Llewellyn_(author)
- Llewellyn, Edward; pseudonym of Edward Llewellyn-Thomas (1917-1984) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/llewellyn_edward
- Llewellyn, Livia (fl. 2000s-2010s) (stories) (assoc.)
- See liviallewellyn.com
- Llewellyn, [Sir] (Samuel Henry) William (1858-1941) (art)
- See en.wikipedia.org/wiki/William_Llewellyn
- Lloyd, Dawn (fl. 2010s) (stories)
- See dawnlloyd.wikispaces.com
- Lloyd, John Uri (1849-1936) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lloyd_john_uri
- Lloyd, Rebecca (fl. 1990s-2010s) (stories)
- See anakimwriter.blogspot.co.uk
- Lloyd, Rebecca (fl. 1990s-2010s) (stories)
- See www.beccalloyd.org
- LoBrutto, Patrick (1948- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Pat_LoBrutto
- Locicero, Thomas (fl. 2010s) (stories)
- See www.goodreads.com/author/show/6469595.Thomas_Locicero
- Locke, George (Walter) (1936-2019) (stories)
- See www.sf-encyclopedia.com/entry/locke_george
- Locke, Richard Adams (1800-1871) (stories)
- See www.sf-encyclopedia.com/entry/locke_richard_adams
- Lockemann, Georg (1871-1959) (stories) (assoc.)
- See en.wikipedia.org/wiki/Georg_Lockemann
- Lodge, [Sir] Oliver (Joseph) (1851-1940) (stories)
- Principal of the University of Birmingham.
- Lodi, Edward (fl. 1980s-2000s) (stories)
- See www.pw.org/content/edward_lodi_1
- Loenen-Ruiz, Rochita (fl. 2000s-2010s) (stories)
- See rcloenenruiz.com
- Loewen, (Craig) Alan (1954- ) (stories)
- See literary-equine.livejournal.com
- Lofficier, Jean-Marc (1954- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lofficier_jean-marc
- Lofficier, Randy (1953- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jean-Marc_Lofficier
- Loftus, Peter (C.) (fl. 2000s-2010s) (stories)
- See irishcomics.wikia.com/wiki/Peter_C._Loftus
- Logan, Sean (fl. 1990s-2010s) (stories)
- See www.cometpress.us/authors/#slogan
- Logsdon, Syd (1950?- ) (stories)
- See www.sf-encyclopedia.com/entry/logsdon_syd
- Lohrman, Paul; house pseudonym (fl. 1950s) (stories)
- See www.sf-encyclopedia.com/entry/lohrman_paul
- Lombardi, Nicola (fl. 2010s) (stories)
- See www.nicolalombardi.com
- London, Jack [born John Griffith Chaney] (1876-1916) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jack_London
- London, Jordan Hamessley (fl. 2010s) (stories)
- See www.publishingcrawl.com/team-member/jordan-hamessley-london/
- London, Matt (fl. 2010s) (stories)
- See themattlondon.com
- Long, Amelia Reynolds (1904-1978) (stories) (assoc.)
- See tellersofweirdtales.blogspot.co.uk/2015/03/amelia-reynolds-long-1904-1978.html
- Long, Beth Adele (fl. 2000s) (stories)
- See www.bethadele.com
- Long, Cynthia June (fl. 2010s) (stories)
- See cynthiajunelong.wordpress.com
- Long, Duncan (Eugene) (1949- ) (stories) (art) (assoc.)
- See www.sf-encyclopedia.com/entry/long_duncan
- Long, Frank Belknap (Jr.) (1903-1994) (stories) (assoc.)
- 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, James (fl. 2000s-2010s) (stories)
- See www.sf-encyclopedia.com/entry/long_james
- Long, Jeff(rey B.) (1951- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/long_jeff
- 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, Nathan (Alling) (fl. 1990s-2010s) (stories) (assoc.)
- See blogs.stockton.edu/longn
- Long, Steven M. (fl. 2010s) (stories)
- See stevenmlong.com
- Long-Ewing, Kimberley (fl. 2000s-2010s) (stories)
- See kim.mysticsheepstudios.com
- Longfellow, Henry Wadsworth (1807-1882) (stories)
- See en.wikipedia.org/wiki/Henry_Wadsworth_Longfellow
- Longhorn, David (fl. 1990s-2010s) (stories) (assoc.)
- See suptales.blogspot.co.uk
- Longstreet, Stephen [born Chauncey Weiner] (1907-2002) (stories)
- See www.stephenlongstreet.com/
- Longstreth, T(homas) Morris (1886-1975) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/longstreth_t_morris
- Longworth, Toby (fl. 1980s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Toby_Longworth
- Longyear, Barry B(rookes) (1942- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/longyear_barry_b
- Loomis, Noel (Miller) (1905-1969) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/loomis_noel
- Looney, Jack (fl. 1960s-1980s) (stories) (assoc.)
- Has also done books on games. Probably pseudonymous.
- Lopez, Aurelio Rico, III (fl. 2000s-2010s) (stories) (art)
- See www.goodreads.com/author/show/1323116.Aurelio_Rico_Lopez_III
- Lopez, Lori R. (fl. 2010s) (stories)
- See fairyflyentertainment.com
- López, (Campo) Ricardo Burgos (1966- ) (stories)
- See www.serpienteemplumada.com/campo_burgos.htm
- Lord, Karen (1968- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lord_karen
- Lord, Mark (fl. 2010s) (stories)
- See marklord.info
- Lorimer, Janet (G.) (1945- ) (stories)
- All titles about 60 pp. and intended for adults learning to read.
- Lörinczy, Judit (fl. 2010s) (stories) (assoc.)
- See judlorin.blogspot.com
- Loring, Jennifer (fl. 1990s-2010s) (stories)
- See jenniferloring.wordpress.com
- Lorrah, Jean (1940- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lorrah_jean
- Lorrain, Claude [born Claude Gellée] ({c}1600-1683) (art)
- See en.wikipedia.org/wiki/Claude_Lorrain
- Lorraine, Lilith; pseudonym of Mary M. Wright (1894-1967) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lorraine_lilith
- Lory, Robert (Edward) (1936- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lory_robert
- Loscocco, Amethyst (fl. 2010s) (stories)
- See www.amethystloscocco.com
- Lostetter, Marina J. (fl. 2010s) (stories)
- See www.lostetter.net
- Lott, S. Makepeace [i.e., Stanley Makepeace-Lott] (1920-1991) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lott_s_makepeace
- Lotz, Sarah (fl. 2000s-2010s) (stories) (assoc.)
- See sarahlotz.com
- Louinet, Patrice (1967- ) (stories) (art)
- See www.barbariankeep.com/louinet.html
- Love, Jeffrey Alan (fl. 2010s) (art)
- See www.jeffreyalanlove.com
- Love, Penelope (fl. 1980s-2010s) (stories)
- See www.yog-sothoth.com/wiki/index.php/Penelope_Love
- Love, Rosaleen (Lucille) (1940- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/love_rosaleen
- Lovecraft, H(oward) P(hillips) (1890-1937) (stories) (art) (assoc.)
- See en.wikipedia.org/wiki/H._P._Lovecraft
- Lovegrove, James (Matthew Henry) (1965- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovegrove_james
- Lovejoy, (William) Alston (Ritchie) (1908-1956) (stories)
- See tellersofweirdtales.blogspot.com/2012/02/alston-lovejoy-1908-1956.html
- Lovejoy, Jack (1937- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovejoy_jack
- Lovelace, Richard (1617-1657) (stories)
- See en.wikipedia.org/wiki/Richard_Lovelace
- Loveland, Patrick (fl. 2010s) (stories)
- See patrickloveland.com
- Lovell, Bobbie (fl. 2010s) (stories)
- See www.bobbie-lovell.com
- Lovelock, James (Ephraim) (1919- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovelock_james
- Lovett, Aaron (1987- ) (art)
- See adlovett.deviantart.com
- Lovett, Richard A., Ph.D. (1953- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Richard_A._Lovett
- Lovin, Roger (Robert) (1941-1991) (stories)
- See www.sf-encyclopedia.com/entry/lovin_roger
- Lovisi, Gary (Anthony) (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovisi_gary
- Low, A(rchibald) M(ontgomery) (1888-1956) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/low_a_m
- Low, Kenson (fl. 1990s-2000s) (art)
- See www.kavatar.co.uk
- Lowachee, Karin (fl. 1990s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Karin_Lowachee
- Lowd, Mary E. (fl. 2000s-2010s) (stories)
- See marylowd.com
- Lowe, Brian K. (fl. 2010s) (stories)
- See brianklowe.wordpress.com
- Lowe, Clint (fl. 2010s) (stories) (assoc.)
- See clintlowe.com
- Lowe, Helen (1961- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Helen_Lowe
- Lowell, James Russell (1819-1891) (stories)
- See en.wikipedia.org/wiki/James_Russell_Lowell
- Lowndes, Robert A(ugustine) W(ard) (1916-1998) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lowndes_robert_a_w
- Lowrance, Heath (fl. 2010s) (stories)
- See psychonoir.blogspot.co.uk
- Lowry, Lynn (1947- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Lynn_Lowry
- Lowther, George (Francis) (1913-1975) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lowther_george