- Ashbless, Janine (fl. 2000s-2010s) (stories)
- See www.janineashbless.blogspot.co.uk
- Ashbrook, H(arriette Cora) (1898-1946) (stories)
- Born in Manhattan, Kansas; died in Scottsbluff, Nebraska; graduated from University of Nebraska; newspaperwoman in Nebraska, Canada, Massachusetts and New York. Also a journalist, and worked in publishing in New York for some years.
- Ashby, Madeline (fl. 2000s-2010s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ashby_madeline
- Ashby, Richard (fl. 1940s-1970s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ashby_richard
- Ashby-Sterry, J(oseph) ({c}1836-1917) (stories) (assoc.)
- See en.wikipedia.org/wiki/Joseph_Ashby-Sterry
- Ashcroft, Peggy [i.e., Dame Edith Margaret Emily Ashcroft] (1907-1991) (stories) (assoc.)
- See en.wikipedia.org/wiki/Peggy_Ashcroft
- Ashe, Edd [i.e., Edmund Marion Ashe, Jr.] (1908-1986) (stories) (art)
- See pulpartists.com/Ashe.html
- Asher, Ellen (fl. 1970s-2000s) (stories) (assoc.)
- See en.wikipedia.org/wiki/Ellen_Asher
- Asher, Neal L. (1961- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/asher_neal
- Ashford, Daisy [i.e., Margaret Mary Julia Ashford] (1881-1972) (stories) (assoc.)
- See en.wikipedia.org/wiki/Daisy_Ashford
- Ashforth, Albert (1933- ) (stories)
- Has been on English faculties of universities in U.S. and Europe; teaches writing at Hofstra University.
- Ashley, Allen (fl. 1980s-2010s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ashley_allen
- Ashley, Arthur Ernest (1906-1979) (stories)
- See gadetection.pbworks.com/w/page/7932417/Vivian%2C%20Francis
- Ashley, C(lifford) W(arren) (1881-1947) (stories) (art)
- Born in New Bedford Massachusetts; died in Westport, Massachusetts.
- Ashley, Charlotte (fl. 2010s) (stories)
- See once-and-future.com
- Ashley, Michael Anthony (fl. 2000s-2010s) (stories)
- See www.beneath-ceaseless-skies.com/authors/michael-anthony-ashley/
- Ashley, Mike [i.e., Michael Raymond Donald Ashley] (1948- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ashley_mike
- Ashmead, Hal (1932-2018) (art)
- See news.cornellcollege.edu/2018/06/hal-ashmead-54-report/
- Ashmead, John (1917-1992) (stories)
- See en.wikipedia.org/wiki/John_Ashmead
- Ashmead-Bartlett, E(llis) (1881-1931) (stories)
- See en.wikipedia.org/wiki/Ellis_Ashmead-Bartlett
- Ashmun, Margaret (Eliza) (1875-1940) (stories)
- See en.wikipedia.org/wiki/Margaret_Ashmun
- Ashton, Edward (fl. 2010s) (stories)
- See www.edwardashton.com
- Ashton, Francis L(eslie) (1904-1994) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ashton_francis_leslie
- Ashton, [Sir] Frederick (William Mallandaine) (1904-1988) (stories) (assoc.)
- See en.wikipedia.org/wiki/Frederick_Ashton
- Ashton, Helen (Rosaline) (1891-1958) (stories)
- Born in London.
- Ashton, Henry (Peter) Allen (1867-1946) (stories)
- Journalist, publisher and editor.
- Ashton, Winifred (1888-1965) (stories)
- Born in London.
- Ashwell, Pauline; pseudonym of Pauline Whitby (1926-2013) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/ashwell_pauline
- Ashworth, Samuel (fl. 2010s) (stories)
- See samuelashworth.com
- Asikuzun, Atilgan (1980- ) (art)
- See www.asikuzun.com
- Asimov, Isaac [anglicized from Isaak Iudich Azimov] (1920-1992) (stories) (assoc.)
- See en.wikipedia.org/wiki/Isaac_Asimov
- Asimov, Janet (Opal Jeppson) (1926-2019) (stories)
- See www.sf-encyclopedia.com/entry/asimov_janet
- Askegren, Pierce (1955-2006) (stories)
- See www.sf-encyclopedia.com/entry/askegren_pierce
- Askew, Alice (Jane de Courccy) (1874-1917) (stories) (assoc.)
- See bearalley.blogspot.co.uk/2007/08/alice-claure-askew.html
- Askew, Claude (Arthur Cary) (1865-1917) (stories) (assoc.)
- See bearalley.blogspot.co.uk/2007/08/alice-claure-askew.html
- Aspe, Pieter [born Pierre Aspeslag] (1915- ) (stories)
- See en.wikipedia.org/wiki/Pieter_Aspe
- Aspinall, Marc (fl. 2010s) (art)
- See www.thetreehousepress.co.uk
- Aspinwall, Marguerite (1888-1982) (stories)
- Novelist, journalist, and one-time fashion editor of Ladies Home Magazine; born in New York; died in Pennsylvania, but buried in Nyack, New York.
- Asplund, Randy (fl. 1980s-2000s) (art)
- See www.randyasplund.com
- Asprey, Matthew; pseudonym of Matthew Asprey Gear (fl. 2010s) (stories)
- See matthewasprey2.wordpress.com
- Asprin, Robert Lynn (1946-2008) (stories) (art) (assoc.)
- See www.sf-encyclopedia.com/entry/asprin_robert_lynn
- Asquith, [Lady] Cynthia (Mary Evelyn, née Charteris) (1887-1960) (stories) (assoc.)
- See en.wikipedia.org/wiki/Cynthia_Asquith
- Asquith, Elizabeth (Charlotte Lucy, Princess Bibesco) (1897-1945) (stories)
- See en.wikipedia.org/wiki/Elizabeth_Bibesco
- Asquith, Herbert (1881-1947) (stories)
- See en.wikipedia.org/wiki/Herbert_Asquith_(poet)
- Asquith, Herbert H(enry, 1st Earl of Oxford and Asquith) (1852-1928) (stories) (assoc.)
- See en.wikipedia.org/wiki/H._H._Asquith
- Asquith, Margot [i.e., Emma Alice Margaret Asquith (née Tennant), Countess of Oxford and Asquith] (1864-1945) (stories)
- See en.wikipedia.org/wiki/Margot_Asquith,_Countess_of_Oxford_and_Asquith
- Asquith, Raymond (1878-1916) (stories) (assoc.)
- See en.wikipedia.org/wiki/Raymond_Asquith
- Assheton-Harbord, The Hon. Mrs. (fl. 1900s-1910s) (stories)
- See www.gracesguide.co.uk/Assheton_Harbord
- Assisi, Saint Francis of [born Giovanni di Pietro di Bernardone] ({c}1182-1226) (stories)
- See en.wikipedia.org/wiki/Francis_of_Assisi
- Astley, [Sir] John (Dugdale, 3rd Baronet) (1828-1894) (stories) (assoc.)
- See en.wikipedia.org/wiki/Sir_John_Dugdale_Astley,_3rd_Baronet
- Aston, [Sir] George (Grey) (1861-1938) (stories)
- See www.dreadnoughtproject.org/tfs/index.php/George_Grey_Aston
- Aston, R. L. (1869-1930) (stories)
- A noted Rugby player, despite only playing for England twice as an international, set a record in 1891 of 30 tries, which remains unequalled. He served on the committee of the Rugby Union, but became a schoolmaster and later house master at Tonbridge School.
- Astor, John Jacob (IV) (1864-1912) (stories) (assoc.)
- See en.wikipedia.org/wiki/John_Jacob_Astor_IV
- Astor, Mary [born Lucile Vasconcellos Langhanke] (1906-1987) (stories) (assoc.)
- See en.wikipedia.org/wiki/Mary_Astor
- Astor, Nancy (Witcher Langhorne, Viscountess Astor) (1879-1964) (stories) (assoc.)
- See en.wikipedia.org/wiki/Nancy_Astor,_Viscountess_Astor
- Astor, William Waldorf (1848-1919) (stories)
- See en.wikipedia.org/wiki/William_Waldorf_Astor
- Atamian, Sarkis (1923-2005) (stories)
- See asbarez.com/54408/long-time-activist-sarkis-atamian-passes-away/
- Atcheson, George, Jr. (1896-1947) (stories)
- See de.wikipedia.org/wiki/George_Atcheson_Jr.
- Atencio, L. C. (fl. 2010s) (stories)
- See creativewriter0.wix.com/lcatencio
- Athanas, W(illiam) Verne (1917-1962) (stories) (assoc.)
- Novelist and short story writer. Born in Cleft, Idaho; died in Boise, Idaho.
- Atherton, Gertrude (Franklin Horn) (1857-1948) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/atherton_gertrude
- Athill, Diana (1917-2019) (stories)
- See en.wikipedia.org/wiki/Diana_Athill
- Atholl, Justin; pseudonym of Sidney Denham (1906-1968) (stories)
- See bearalley.blogspot.co.uk/2015/06/justin-atholl.html
- Atkeson, Mary Meek (1884-1971) (stories)
- See www.wvencyclopedia.org/print/Article/306
- Atkey, Bertram (1880-1952) (stories) (assoc.)
- Author, creator of criminal character Smiler Bunn and amateur detective Prosper Fair. Born in Wiltshire, England; lived in Coniston, Highcliffe-on-Sea, Hants, England.
- Atkins, Frank Howard (1882-1921) (stories)
- His father (1840 - 1927) wrote novels as Frank Atkins, Frank Aubrey and Fenton Ash; and the two writers may have collaborated. St. Mars was a naturalist by inclination (if not training), and his stories of animals were very popular with the readers of Adventure. Although sickly (his letters make constant reference to his ill-health), he spent much time out-of-doors and even corresponded with Theodore Roosevelt. He was born in Bromley, Kent, England and lived in Southsea, Hants, England.
- Atkins, John (Alfred) (1916-2009) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/atkins_john
- Atkins, Peter (1955- ) (stories) (assoc.)
- Screenwriter.
- Atkinson, (Justin) Brooks (1894-1984) (stories)
- See en.wikipedia.org/wiki/Brooks_Atkinson
- Atkinson, Gordon (fl. 2010s) (stories)
- See gordonatkinson.net
- Atkinson, Janet (fl. 1990s-2000s) (art)
- See janetatkinson.com
- Atkinson, [Professor] John (1854-1904) (stories) (assoc.)
- Noted surgeon and bonesetter, also a vet.
- Atkinson, Oriana (1895?-1989) (stories)
- See www.nytimes.com/1989/08/02/obituaries/oriana-atkinson-an-author-94.html
- Atkinson, Owen (1898-?) (stories)
- Writer. Born in Doniphan, Missouri; lived in Los Angeles, California.
- Atlee, [Dr.] (Harold) Benge (1890-1978) (stories) (assoc.)
- See findingaids.library.dal.ca/atlee-h-b-harold-benge-1890-1978
- Atoda, Takashi (1935- ) (stories)
- See www.booksfromjapan.jp/authors/cjw/item/296-takashi-atoda
- Aton, James L. (1879-?) (stories)
- Born in Kentucky, a painter.
- Attanasio, A(lfred) A(ngelo) (1951- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/attanasio_a_a
- Attebery, Brian (Leonard) (1951- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/attebery_brian
- Attenborough, David (1926- ) (stories)
- Noted writer, television producer, photographer and director. Born in London, England.
- Atterbury, Francis (1663-1732) (stories) (assoc.)
- See en.wikipedia.org/wiki/Francis_Atterbury
- Atteridge, A(ndrew) Hilliard (1852-1941) (stories)
- Journalist and war correspondent.
- Attiwill, Ken(neth Andrew) (1906-1992) (stories)
- Born in Adelaide and a journalist there and in Melbourne; later lived in England.
- Attlee, Clement (Richard, 1st Earl Attlee) (1883-1967) (stories) (assoc.)
- See en.wikipedia.org/wiki/Clement_Attlee
- Attwell, Mabel Lucie (1879-1964) (stories) (art) (assoc.)
- See en.wikipedia.org/wiki/Mabel_Lucie_Attwell
- Atwater, Adeline L(obdell) (1887-1975) (stories)
- See mms.newberry.org/html/Atwater.html
- Atwater, James D(avid) (1928-1996) (stories)
- See www.nytimes.com/1996/03/11/us/james-atwater-journalist-and-dean-67.html
- Atwater, Mary M(eigs) (1878-1956) (stories)
- Born in Rock Island, Illinois; writer, designer, authority on hand weaving; taught drawing and design; worked as occupational therapist, lived in Montana.
- Atwater, Montgomery M(eigs) (1904-1976) (stories) (assoc.)
- Author and avalanche specialist. Born in Baker City, Oregon.
- Atwill, Lionel (Alfred William) (1885-1946) (stories) (assoc.)
- See en.wikipedia.org/wiki/Lionel_Atwill
- Atwood, Harry N(elson) (1883-1967) (stories)
- See en.wikipedia.org/wiki/Harry_Atwood
- Atwood, Margaret (Eleanor Kilian) (1939- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Margaret_Atwood
- Au, Nancy (fl. 2010s) (stories)
- See www.peascarrots.com
- Aubanel, Théodore (1829-1886) (stories) (assoc.)
- See en.wikipedia.org/wiki/Théodore_Aubanel
- Aubrey, Frank; pseudonym of Frank Atkins (1847-1927) (stories)
- See www.sf-encyclopedia.com/entry/aubrey_frank