- Le May, Clare (fl. 2010s) (items) (chron.)
- See www.webvivantpress.com/clare_le_may.html
- Lemberg, Rose (B.) (1976- ) (items) (chron.)
- See en.wikipedia.org/wiki/R._B._Lemberg
- LeMoal, Daniel (fl. 2000s-2010s) (items) (chron.)
- See daniellemoal.blogspot.co.uk
- Lenaers, Florence (fl. 2010s-2020s) (items) (chron.)
- See strangehorizons.com/author/florence-lenaers
- le Nain, Louis (c1603-1648) (items) (chron.)
- See en.wikipedia.org/wiki/Le_Nain
- L’Engle, Madeleine; [i.e., Madeleine L’Engle Franklin (née Camp)] (1918-2007) (items) (chron.)
- See en.wikipedia.org/wiki/Madeleine_L'Engle
- Lengyel, Cornel (Adam) (1915-2003) (items)
- See www.sf-encyclopedia.com/entry/lengyel_cornel
- Lennon, Andrew (fl. 2010s) (items) (chron.)
- See lennonslair.blogspot.com
- Lennon, J(ohn) Robert (1970- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/lennon_j_robert
- Leonard, [Elisabeth] Anne (fl. 1990s-2020s) (items) (chron.)
- See anneleonardbooks.com
- Leonard, Jonathan Norton (1903-1975) (items)
- See prabook.com/web/jonathan_norton.leonard/1079204
- Leonard, Paul; pseudonym of P. J. L. Hinder (1961- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/leonard_paul
- Leong, Sloane (fl. 2010s-2020s) (items) (chron.)
- See sloanesloane.com
- Léourier, Christian (1948- ) (items)
- See fr.wikipedia.org/wiki/Christian_Léourier
- Lepovetsky, Lisa; [i.e., Alica E. Lepovetsky] [née Harvey] (1951-2019) (items) (chron.)
- See www.legacy.com/obituaries/smdailypress/obituary.aspx?n=alice-e-lepovetsky-lisa-harvey&pid=194171402&fhid=15334
- Lepucki, Edan (1981- ) (items)
- See www.edanlepucki.com
- Le Queux, William (Tufnell) (1864-1927) (items) (chron.)
- See en.wikipedia.org/wiki/William_Le_Queux
- Lerman, Eleanor (1952- ) (items)
- See en.wikipedia.org/wiki/Eleanor_Lerman
- Lerner, Edward M. (1949- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/lerner_edward_m
- Lerner, Eric J. (1947- ) (items)
- See en.wikipedia.org/wiki/Eric_Lerner
- Leroux, Gaston (1868-1927) (items) (chron.)
- See www.sf-encyclopedia.com/entry/leroux_gaston
- LeShan, Lawrence (1920- ) (items) (chron.)
- See en.wikipedia.org/wiki/Lawrence_LeShan
- Lesley, Kiera (fl. 2010s-2020s) (items) (chron.)
- See www.chaptersinflux.com
- Leslie, David Stuart (Lauder) (1921-1999) (items)
- Born in Croydon, England, grew up in Australia, returned to England to serve in the RAF during WWII; novelist, drama and English tutor; worked on the London stage; died in Surrey, England.
- Leslie, Desmond (Arthur Peter) (1921-2001) (items)
- See www.sf-encyclopedia.com/entry/leslie_desmond
- Leslie, Jean (Eva) (1908-1994) (items) (chron.)
- Born in Omaha, raised in Santa Monica; teaching fellow in psychology; married Gordon F. Cornett in 1934; died in Ventura, California.
- Leslie, Peter (Meyrick Johnston) (1922-2000) (items)
- See www.sf-encyclopedia.com/entry/leslie_peter
- Leslie, V. H. (fl. 2010s-2020s) (items) (chron.)
- See vhleslie.wordpress.com
- Leśmian, Bołeslaw; [born Bołeslaw Lesman] (1877-1937) (items) (chron.)
- See en.wikipedia.org/wiki/Bolesław_Leśmian
- Lesser, Milton; former name of Stephen Marlowe (1928-2008) (items) (chron.)
- See www.sf-encyclopedia.com/entry/lesser_milton
- Lessing, Doris (May) (1919-2013) (items)
- See www.sf-encyclopedia.com/entry/lessing_doris
- Lester, R. Daniel (fl. 2000s-2020s) (items) (chron.)
- See www.smashwords.com/profile/view/rdaniellester
- Lethem, Jonathan (Allen) (1964- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/lethem_jonathan
- Letson, Russell (Francis) (1945- ) (items) (chron.)
- See users.cloudnet.com/rletson
- Letts, Barry (1925-2009) (items)
- See www.sf-encyclopedia.com/entry/letts_barry
- Leullier, Natasha (fl. 2010s-2020s) (items) (chron.)
- See lunastationquarterly.com/lsq-author/natasha-leullier
- Levenda, Peter (fl. 2000s-2010s) (items) (chron.)
- See en.wikipedia.org/wiki/Peter_Levenda
- Levene, Malcolm (1937-1973) (items)
- See www.sf-encyclopedia.com/entry/levene_malcolm
- Levene, Rebecca (fl. 1990s-2010s) (items)
- See en.wikipedia.org/wiki/Rebecca_Levene
- Levenseller, Tricia (fl. 2010s) (items) (chron.)
- See tricialevenseller.com
- Leverage, Henry; [working name of David Carroll Henry] (1879-1931) (items) (chron.)
- See oztypewriter.blogspot.com/2019/11/henry-leverage-pulp-fiction-author-who.html
- Leverone, Allan (fl. 2000s-2020s) (items) (chron.)
- See www.allanleverone.com
- Levi, Steven C. (fl. 1990s-2010s) (items) (chron.)
- See www.stevelevibooks.com
- Levin, Emma (fl. 2010s-2020s) (items) (chron.)
- See emmalevinwrites.com
- Levin, Harry (Tuchman) (1912-1994) (items) (chron.)
- See www.jstor.org/stable/987280
- Levin, Ira (1929-2007) (items)
- See en.wikipedia.org/wiki/Ira_Levin
- Levine, David D(aniel) (1961- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/levine_david_d
- Levine, Jess (fl. 2020s) (items) (chron.)
- See jessfrom.online
- Levinson, [Dr.] Paul (1947- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/levinson_paul
- Levithan, David (1972- ) (items)
- See en.wikipedia.org/wiki/David_Levithan
- LeVoit, Violet (fl. 2010s) (items) (chron.)
- See www.violetlevoit.com/bio.html
- Levy, Colin (c1989- ) (items)
- See www.colinlevy.com
- Levy, David (Neil Laurence) (1945- ) (items)
- See en.wikipedia.org/wiki/David_Levy_(chess_player)
- Levy, Roger (1950- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/levy_roger
- Lewin, Paul (1973- ) (items) (chron.)
- See www.paullewinart.com
- Lewis, Anthony R(ichard) “Tony” (1941- ) (items) (chron.)
- See www.sf-encyclopedia.com/entry/lewis_anthony_r
- Lewis, C(live) S(taples) (1898-1963) (items) (chron.)
- See en.wikipedia.org/wiki/C.S._Lewis
- Lewis, D(es) F. (1948- ) (items) (chron.)
- See dflewisreviews.wordpress.com
- Lewis, E. Michael (fl. 2000s-2010s) (items) (chron.)
- See www.emichaellewis.com
- Lewis, [Captain] George Warburton (1878-1963) (items) (chron.)
- See tellersofweirdtales.blogspot.com/2023/06/capt-george-warburton-lewis-1878-1963.html
- Lewis, Herschell G(ordon) (1929-2016) (items)
- See en.wikipedia.org/wiki/Herschell_Gordon_Lewis
- Lewis, Irwin (1916-1996) (items) (chron.)
- See www.sf-encyclopedia.com/entry/lewis_irwin
- Lewis, Isabel M(artin) (1881-1966) (items) (chron.)
- See en.wikipedia.org/wiki/Isabel_Martin_Lewis
- Lewis, Karyn (fl. 2010s) (items) (chron.)
- See www.karynlewis.com
- Lewis, Ken(neth Ralph) (1917-2000) (items) (chron.)
- See www.newspapers.com/article/monrovia-news-post-ken-lewis-author/135532438/
- Lewis, L(eslie) A(llin) (1899-1961) (items)
- See desturmobed.blogspot.co.uk/2016/01/la-lewis.html
- Lewis, Linden A. (fl. 2010s) (items) (chron.)
- See www.beneath-ceaseless-skies.com/authors/linden-a-lewis/