- McFarlane, (Charles) Leslie (1902-1977) (stories)
- Newspaperman; prolific hack; also author of Hardy Boys stories under name of Franklin W. Dixon. Born in Carleton Place, Ontario, Canada; died in Whitby, Ontario, Canada.
- McFate, Sean (fl. 2010s) (stories) (assoc.)
- See www.seanmcfate.com
- McFetridge, G. D. (fl. 2000s-2010s) (stories)
- See www.writefortomorrow.org/publications/when-it-comes-to-his-wife/g-d-mcfetridge
- McFetridge, John (1959- ) (stories)
- See en.wikipedia.org/wiki/John_McFetridge
- McGaughey, Dudley Dean (1909-1986) (stories)
- Born in Rialto, California; died in Laguna Beach, California.
- McGill, E(arl) J(oseph) (1931- ) (stories)
- Retired teacher and Air Force pilot living in Tucson.
- McGivern, William P(eter) (1922-1982) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/mcgivern_william_p
- McGoran, Jon (fl. 2010s) (stories)
- See www.jonmcgoran.com
- McGregor, Rafe (1973- ) (stories)
- See philpapers.org/profile/32092
- McGrew, Donald Francis (1886-1955) (stories)
- See pulpflakes.blogspot.com/2019/07/donald-francis-mcgrew-author-journalist.html
- McGuire, John J(oseph) (1917-1981) (stories)
- See www.sf-encyclopedia.com/entry/mcguire_john_j
- McHugh, Fred D(evereux) (1897-?) (stories)
- Engineer.
- McInerny, Ralph (Matthew) (1929-2010) (stories)
- See en.wikipedia.org/wiki/Ralph_McInerny
- McIntyre, John T(homas) (1871-1951) (stories)
- Born and died in Philadelphia.
- McKeag, Ernest L(ionel) (1896-1976) (stories)
- See bearalley.blogspot.co.uk/2006/08/ernest-mckeag_17.html
- McKeever, Jeffrey B. (fl. 2010s) (art)
- See www.screamingceltstudio.com/profile.asp
- McKelvey, Nat W. (1914- ) (stories)
- Journalist and writer. From Arizona.
- McKenna, Edward L(awrence) (1893-1953) (stories)
- Author, columnist, assistant professor of insurance at the University of Pennsylvania. Born in Brooklyn, New York; died in Baltimore, Pennsylvania.
- McKenney, Ruth (1911-1972) (stories)
- See www.nytimes.com/1972/07/27/archives/ruth-mckenney-is-dead-at-60-author-of-my-sister-eileen-won-fame.html
- McKinnon, Hannah Mary (1971- ) (stories)
- See hannahmarymckinnon.com
- McKinty, Adrian (1968- ) (stories) (assoc.)
- See adrianmckinty.blogspot.co.uk
- McKissock, Alexander Cathie (1879-1942) (stories)
- Born in Partick, Lancarkshire, Scotland; died in Staines, England; factory manager for Barry and Staines Linoleum.
- McKnight, Bob [i.e., Robert Charles McKnight] (1906-1986) (stories)
- Born in Pomeroy, Ohio; mining engineer, pilot and horseracing handicapper before semi-retiring to Florida; died in St. Petersburg, Florida.
- McLaren, Jack [i.e., John McLaren] (1887-1954) (stories)
- Born in Melbourne, Australia. Lived in Australia, the South Seas, England; adventurer, author and broadcaster.
- McLarn, Jack Clinton (1903- ) (stories)
- Poet, story writer. Born in Birmingham, Alabama.
- McLaurin, Kate L. [Mrs. Frederick Calvin] (1885-1933) (stories)
- Actress, novelist and playwright. Born in Benton, Mississippi; died in Los Angeles, California.
- McLean, Russel D. (fl. 2000s-2010s) (stories)
- See www.russeldmcleanbooks.com
- McLoughlin, Wayne (fl. 1970s-2010s) (art)
- See www.blueloonfinearts.com/abouttheartist.htm
- McMahon, Jennifer (1968- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jennifer_McMahon
- McMasters, William H. (fl. 1950s) (stories)
- See www.sf-encyclopedia.com/entry/mcmasters_william_h
- McMorrow, Thomas (1886-1957) (stories)
- Writer, lawyer, newspaperman. Born in New York City; died in New York.
- McNeile, H(erman) C(yril) (1888-1937) (stories)
- See en.wikipedia.org/wiki/H._C._McNeile
- McNiven, Julia (fl. 1970s) (stories) (assoc.)
- Oldest daughter of John Dickson Carr.
- McVey, David (fl. 1990s-2010s) (stories)
- See www.david-mcvey.co.uk
- McWilliams, Alden S(purr) (1916-1993) (art)
- See pulpartists.com/McWilliams.html
- Mead, Harold (Charles Hugh) (1910-1997) (stories)
- See www.sf-encyclopedia.com/entry/mead_harold
- Meade, L. T.; pseudonym of Elizabeth Thomasina Meade Smith (1844-1914) (stories)
- See www.sf-encyclopedia.com/entry/meade_l_t
- Meadows, Patrick (1934-2017) (stories)
- See www.patrick-meadows.com/obituary-english/
- Meaker, Marijane (Agnes) (1927- ) (stories)
- See en.wikipedia.org/wiki/Marijane_Meaker
- Mearson, Lyon (1888-1966) (stories)
- See www.sf-encyclopedia.com/entry/mearson_lyon
- Medd, E(velyn) N(atalie) Powys (Mathers) (1888-1960) (stories)
- Born in South Africa; died in Lambeth, London.
- Meech, Thomas Cox (1868-1940) (stories)
- See bearalley.blogspot.co.uk/2007/09/paul-urquhart-ladbroke-black-thomas.html
- Meek, S(terner St.) P(aul) (1894-1972) (stories)
- See www.sf-encyclopedia.com/entry/meek_s_p
- Meeks, Shaun (fl. 2010s) (stories) (assoc.)
- See www.shaunmeeks.com
- Megna, Frank (fl. 2010s) (stories)
- See newplayexchange.org/users/7702/frank-megna
- Mehrotra, Rati (fl. 2000s-2010s) (stories)
- See ratiwrites.com
- Mei, Ann (fl. 2010s) (art)
- See www.maskins.com/Artworks/Artists/Ann-Mei
- Meier, Leslie (1948- ) (stories)
- Reporter on Cape Cod.
- Meilink, William (1903-1953) (art)
- See pulpartists.com/Meilink.html
- Meinke, Peter (1932- ) (stories)
- See en.wikipedia.org/wiki/Peter_Meinke
- Mellon, Mark A. (fl. 1990s-2010s) (stories)
- See www.sf-encyclopedia.com/entry/mellon_mark
- Melo, Patricia (1962- ) (stories)
- Screenwriter and playwright in Sao Paulo.
- Meltzer, Brad(ley Scott) (1970- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Brad_Meltzer
- Melville, Jean-Pierre [born Jean-Pierre Grumbach] (1917-1973) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jean-Pierre_Melville
- Memmott, Aaron (fl. 2010s) (art)
- See fineartamerica.com/profiles/aaron-t-memmott.html
- Menaker, Daniel (fl. 1970s-2010s) (stories)
- See en.wikipedia.org/wiki/Daniel_Menaker
- Menapace, Jeff (fl. 2010s) (stories) (assoc.)
- See www.jeffmenapace.com
- Meola, John (Constantino) (1916-1993) (art)
- See pulpartists.com/Meola.html
- Mergendahl, Charles (Henry) (1919-1959) (stories)
- Novelist, actor, traveller. Born in Lynn, Massachusetts; died in Glen Cove, Long Island, New York.
- Mérimée, Prosper (1803-1870) (stories)
- See en.wikipedia.org/wiki/Prosper_M%C3%A9rim%C3%A9e
- Merrigan, Court (fl. 2000s-2010s) (stories)
- See courtmerrigan.com
- Merril, Judith [originally Josephine Juliet Grossman] (1923-1997) (stories)
- See www.sf-encyclopedia.com/entry/merril_judith
- Merritt, A(braham Grace) (1884-1943) (stories)
- See www.sf-encyclopedia.com/entry/merritt_a
- Mersereau, John (1898-1989) (stories)
- See www.ruemorguepress.com/authors/mersereau.html
- Mertz, Barbara (Louise) G(ross) (1927-2013) (stories)
- See en.wikipedia.org/wiki/Barbara_Mertz
- Merwin, Sam(uel Kimball), Jr. (1910-1996) (stories)
- See www.sf-encyclopedia.com/entry/merwin_sam_jr
- Merwin, Samuel (Kimball) (1874-1936) (stories)
- Born in Evanston, Illinois, died in New York City; educated at Northwestern University; contributed many short stories and serials to magazines. Father of Sam Merwin, Jr..
- Meskil, Paul (Stewart) (1928-2005) (stories)
- Reporter for New York Daily News; wrote books on organized crime.
- Mesler, Corey (fl. 1990s-2010s) (stories)
- See en.wikipedia.org/wiki/Corey_Mesler
- Metzger, Darragh (fl. 1990s-2000s) (stories)
- See www.darraghmetzger.com
- Meyer, Adam (fl. 1990s-2010s) (stories)
- See www.goodreads.com/author/show/7367.Adam_Meyer
- Meyerhofer, Michael (1977- ) (stories)
- See en.wikipedia.org/wiki/Michael_Meyerhofer
- Meyers, Ric(hard Sam) (1953- ) (stories)
- See www.sf-encyclopedia.com/entry/meyers_richard_s
- Michael, Becky (fl. 2010s) (stories)
- See about.me/becky.michael
- Michel, John B. (1917-1969) (stories)
- See en.wikipedia.org/wiki/John_B._Michel
- Michel, M(ilton) Scott (1916-1992) (stories)
- See www.sf-encyclopedia.com/entry/michel_m_scott
- Middlebrooks, Denise (fl. 2000s-2010s) (stories)
- See publisherswriters.org/?mtt_page=denise-middlebrooks
- Middleton, Richard (Barham) (1882-1911) (stories)
- Born in Staines, Middlesex; insurance clerk turned unsuccessful writer.
- Mighels, Philip Verrill (1869-1911) (stories)
- See www.sf-encyclopedia.com/entry/mighels_philip_verrill
- Mikes, George [i.e., György Mikes] (1912-1987) (stories)
- See en.wikipedia.org/wiki/George_Mikes
- Milán, Victor (Woodward) (1954-2018) (stories)
- See www.sf-encyclopedia.com/entry/milan_victor
- Milchman, Jenny (fl. 2010s) (stories) (assoc.)
- See www.jennymilchman.com
- Miles, Scott (fl. 2010s) (stories)
- See scottmiles.wordpress.com/about
- Mill, Robert R. (1895-1942) (stories)
- See pulpflakes.blogspot.co.uk/2017/01/robert-r-mill.html
- Millar, Kenneth (1915-1983) (stories)
- Detective story writer; his later mysteries featured detective Lew Archer. Born in Los Gatos, California; died in Santa Barbara, California.
- Millard, Joseph J(ohn) (1908-1989) (stories)
- See bearalley.blogspot.co.uk/2010/09/joe-millard.html
- Millay, Edna St. Vincent (1892-1950) (stories)
- See en.wikipedia.org/wiki/Edna_St._Vincent_Millay
- Miller, (Mabel) Elizabeth York (1879-1949) (stories)
- Born in Washington, D.C.; a journalist and writer; became a naturalized British citizen in 1934; died in Maidstone, England.
- Miller, Frank (1957- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/miller_frank
- Miller, G(eorge) Wayne (1954- ) (stories)
- Staff writer for Providence, R.I. newspaper.
- Miller, Graydon (fl. 2010s) (stories)
- See www.goodreads.com/author/show/8426027.Graydon_Miller
- Miller, Lynn C. (fl. 2010s) (stories) (assoc.)
- See www.lynncmiller.com
- Miller, R(ichard) DeWitt (1910-1958) (stories)
- See www.sf-encyclopedia.com/entry/miller_r_dewitt
- Miller, Tevis (1913-1983) (stories)
- Graduate of Western State College, Colorado; died in Portland, Oregon; author of westerns.
- Miller, Warren Hastings (1876-1960) (stories)
- See pulpflakes.blogspot.com/2013/02/biography-of-warren-hastings-miller.html
- Millholland, Ray(mond Albert) (1894-1956) (stories)
- See pulpflakes.blogspot.co.uk/2017/03/ray-millholland-engineer-sailor-author.html
- Mills, Arthur (Frederick Hobart) (1887-1955) (stories)
- Educated at Wellington and Sandhurst College; was reporter with London Daily Mail and Sunday Dispatch.