- Levinson, [Dr.] Paul (1947- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/levinson_paul
- Lewin, Leonard C(ase) (1916-1999) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lewin_leonard_c
- Lewis, Anthony R(ichard) Tony (1941- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lewis_anthony_r
- Lewis, C(live) S(taples) (1898-1963) (stories) (assoc.)
- See en.wikipedia.org/wiki/C.S._Lewis
- Lewis, (Ernest Michael) Roy (1913-1996) (stories) (assoc.)
- See en.wikipedia.org/wiki/Roy_Lewis
- Lewis, (Percy) Wyndham (1882-1957) (stories) (assoc.)
- See en.wikipedia.org/wiki/Wyndham_Lewis
- Lewitt, S. N.; pseudonym of Shariann Lewitt (1954- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lewitt_s_n
- Ley, Willy (1906-1969) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ley_willy
- Lichtenberg, Jacqueline (1942- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lichtenberg_jacqueline
- Lieberman, Herbert (Henry) (1933- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lieberman_herbert
- Lieberman, Robert (Howard) (1941- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lieberman_robert
- Lief, Evelyn (fl. 1960s-1980s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lief_evelyn
- Lightner, A. M. [i.e., Alice Martha Lightner Hopf] (1904-1988) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lightner_a_m
- Linaweaver, Brad(ford Swain) (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/linaweaver_brad
- Lindholm, Megan [i.e., Margaret Astrid Lindholm Ogden] (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lindholm_megan
- Lindner, Robert (Mitchell) (1914-1956) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lindner_robert
- Lindop, Audrey (Beatrice Noel) Erskine [Mrs. Dudley Leslie] (1920-1986) (stories) (assoc.)
- Novelist and screenwriter in England.
- Lindsay, David (1876-1945) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lindsay_david
- Lindsay, Kathleen (Mary) (1903-1973) (stories)
- See www.sf-encyclopedia.com/entry/lindsay_kathleen
- Lindskold, Jane M. (1962- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jane_Lindskold
- Linklater, Eric (Robert Russell) (1899-1974) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/linklater_eric
- Lionni, Leo (1910-1999) (stories) (assoc.)
- See en.wikipedia.org/wiki/Leo_Lionni
- Lipman, William R. (1894-1951) (stories) (assoc.)
- Born in New York City; died in Los Angeles; a screenwriter.
- Lippincott, David (McCord) (1924-1984) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lippincott_david
- Lithgow, Mike [i.e., Michael John Lithgow] (1920-1963) (stories) (assoc.)
- See en.wikipedia.org/wiki/Mike_Lithgow
- Littell, Jonathan (1967- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/littell_jonathan
- Littke, Lael J(ensen) (1929- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Lael_Littke
- Littlefield, Sophie (fl. 2000s-2010s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/littlefield_sophie
- Lively, Adam (1961- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lively_adam
- Livia, Anna [i.e., Anna Livia Julian Brawn] (1955-2007) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/anna_livia
- Livingston, Harold (1924- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/livingston_harold
- 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
- Llewellyn, Edward; pseudonym of Edward Llewellyn-Thomas (1917-1984) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/llewellyn_edward
- Lloyd, John Uri (1849-1936) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lloyd_john_uri
- LoBrutto, Patrick (1948- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Pat_LoBrutto
- Locke, George (Walter) (1936-2019) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/locke_george
- Locke, Richard Adams (1800-1871) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/locke_richard_adams
- Lockemann, Georg (1871-1959) (stories) (assoc.)
- See en.wikipedia.org/wiki/Georg_Lockemann
- 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
- Lofting, Hugh (John) (1886-1947) (stories) (assoc.)
- See en.wikipedia.org/wiki/Hugh_Lofting
- Logan, Charles (1930- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/logan_charles
- Logsdon, Syd (1950?- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/logsdon_syd
- London, Jack [born John Griffith Chaney] (1876-1916) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jack_London
- London, Joan (1901-1971) (stories) (assoc.)
- Daughter of Jack London, wife of Barney Mayes.
- Long, Charles R(ussell) (1904-1978) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/long_charles_r
- Long, Duncan (Eugene) (1949- ) (stories) (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, Jeff(rey B.) (1951- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/long_jeff
- Longstreth, T(homas) Morris (1886-1975) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/longstreth_t_morris
- 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.
- Lord, Jeffrey; house pseudonym (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lord_jeffrey
- Lord, Karen (1968- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lord_karen
- Lore, Pittacus; pseudonym of James N. Frey (1943- ) & Jobie Hughes (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lore_pittacus
- Lorrah, Jean (1940- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lorrah_jean
- Lory, Robert (Edward) (1936- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lory_robert
- Lourie, Richard (Eliot) (1940- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lourie_richard
- Love, Rosaleen (Lucille) (1940- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/love_rosaleen
- Lovecraft, H(oward) P(hillips) (1890-1937) (stories) (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, Jack (1937- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovejoy_jack
- Lovelace, Delos W(heeler) (1894-1967) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovelace_delos_w
- Lovesey, Andrew (1941- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovesey_andrew
- Lovin, Roger (Robert) (1941-1991) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovin_roger
- Lovisi, Gary (Anthony) (1952- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lovisi_gary
- Lowachee, Karin (fl. 1990s-2010s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Karin_Lowachee
- Lowe, Steve(n) (1946?- ) (stories) (assoc.)
- Graduate of Boston College; then French teacher, producer and host of Our Time radio program; living in Massachusetts.
- Lowndes, Robert A(ugustine) W(ard) (1916-1998) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lowndes_robert_a_w
- Lowry, Lois (1937- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lowry_lois
- Lucas, E(dward) V(errall) (1868-1938) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lucas_e_v
- Luceno, James (1947- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/luceno_james
- Lucie-Smith, Edward (1933- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lucie-smith_edward
- Luck, Mary Spotswood Ash (1869-1949) (stories)
- Born in Ireland; married an officer in the Indian Army and lived there until about 1918, thereafter in England.
- Luckett, Dave (1951- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Dave_Luckett
- Ludlam, Harry [born Herbert W. Ludlam] (1926-2011) (stories) (assoc.)
- See desturmobed.blogspot.com/2018/08/harry-ludlam.html
- Ludwig, Edward W(illiam) (1920-1990) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ludwig_edward_w
- Lukeman, Alex (1941- ) (stories)
- See alexlukeman.com
- Lukin, Josh ({c}1969-2019) (stories) (assoc.)
- See liberalarts.temple.edu/academics/faculty/lukin-joshua
- Lunan, Duncan (Alasdair) (1945- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lunan_duncan
- Lund, T(rygve) (1886-?) (stories)
- Born in Norway; served in British Army in Boer War and then Royal Air Force; went to Canada and became member of Royal Northwest Mounted Police; at last sighting in 1935 was living in Ontario; death not traced.
- Lundberg, Jason Erik (fl. 2000s-2010s) (stories) (assoc.)
- See jasonlundberg.wordpress.com
- Lundwall, Sam J(errie) (1941- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lundwall_sam_j
- Lupoff, Richard A(llen) (1935- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lupoff_richard_a
- Lustbader, Eric Van (1946- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lustbader_eric_van
- Luttrell, Lesleigh (Couch) (fl. 1970s-2010s) (stories) (assoc.)
- See fancyclopedia.org/lesleigh-luttrell
- Lymington, John; pseudonym of John Newton Chance (1911-1983) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lymington_john
- Lynch, Patricia ({c}1894-1972) (stories) (assoc.)
- See en.wikipedia.org/wiki/Patricia_Lynch
- Lynds, Dennis (1924-2005) (stories)
- See www.sf-encyclopedia.com/entry/lynds_dennis
- Lynn, Elizabeth A(nne) (1946- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/lynn_elizabeth_a
- Lyttleton, Raymond A(rthur) (1911-1995) (stories) (assoc.)
- See en.wikipedia.org/wiki/Raymond_Lyttleton
- Maberry, Jonathan (1958- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jonathan_Maberry
- MacApp, C. C.; pseudonym of Carroll M. Capps (1913-1971) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/macapp_c_c
- Macardle, Dorothy (Marguerite Callan) (1889-1958) (stories) (assoc.)
- See en.wikipedia.org/wiki/Dorothy_Macardle
- MacAvoy, R(oberta) A(nn) (1949- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/macavoy_r_a
- MacCloud, Malcolm (fl. 1980s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/maccloud_malcolm
- Macdonald, Caroline (1948-1997) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/macdonald_caroline