- Corson, Charles S(chell) (1882-1921) (art)
- See www.askart.com/artist/Charles_Schell_Corson/27412/Charles_Schell_Corson.aspx
- Cortissoz, Royal (1869-1948) (stories)
- See en.wikipedia.org/wiki/Royal_Cortissoz
- Corvin, Blaise (fl. 2010s) (stories) (assoc.)
- See www.goodreads.com/author/show/15845960.Blaise_Corvin
- Corvus, Denis (fl. 2010s) (stories) (assoc.)
- See dantecyberman.deviantart.com
- Corwin, Aaron (fl. 2010s) (stories)
- See us.macmillan.com/author/aaroncorwin#
- Cory, Annie Sophie (1868-1952) (stories)
- Born in India.
- Cory, Fanny Y(oung) (1877-1972) (stories) (art)
- See en.wikipedia.org/wiki/Fanny_Cory
- Cory, Howard L.; pseudonym of Jack Jardine (1931-2009) & Julie Ann Jardine (1926-2012) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/cory_howard_l
- Cory, J. Campbell (1867-1925) (stories)
- See john-adcock.blogspot.co.uk/2014/05/a-rambling-life-j-campbell-cory-1867.html
- Cory, William Johnson (1823-1892) (stories)
- See en.wikipedia.org/wiki/William_Johnson_Cory
- Coryndon, [Sir] R(obert) T(horne) (1870-1925) (stories)
- See en.wikipedia.org/wiki/Robert_Coryndon
- Cosby, Charles Mortimer (1884-1927) (stories)
- Writer, journalist and sheriff. This last occupation got him killed by an auto thief. Born in Danville, Virginia; shot in Laramie, Wyoming.
- Coscarelli, Don (1954- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Don_Coscarelli
- Cosgrave, John OHara (1866-1947) (stories)
- See www.sf-encyclopedia.com/entry/cosgrave_john_ohara
- Cosgrove, Mabel (Mary Agnes) (1873-?) (stories)
- See bearalley.blogspot.co.uk/2009/03/curious-case-of-mrs-chan-toon.html
- Cosh, E. G. (fl. 2010s) (stories)
- See egcosh.com
- Costa, Margaret Jull (1949- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Margaret_Jull_Costa
- Costa, Paul Edward (fl. 2010s) (stories)
- See paperback-press.com/paul-edward-costa/
- Costa, Shelley (fl. 2000s-2010s) (stories)
- See www.shelleycosta.com
- Costa, T. L. (fl. 2010s) (stories) (assoc.)
- See tlcosta.com/sample-page
- Costanza, Peter (Anthony) (1913-1984) (art)
- See pulpartists.com/Costanza.html
- Costello, Frederick H(ankerson) (1851-1921) (stories)
- See www.sf-encyclopedia.com/entry/costello_frederick_h
- Costello, John (H.) (1948-2015) (stories) (assoc.)
- See ccbfuneral.com/?p=2909
- Costello, Lou(is Francis) (1906-1959) (stories) (assoc.)
- See en.wikipedia.org/wiki/Lou_Costello
- Costello, Matthew J(ohn) (1948- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/costello_matthew_j
- Costello, P. F.; house pseudonym (fl. 1940s-1950s) (stories)
- See www.sf-encyclopedia.com/entry/costello_p_f
- Costikyan, Greg(ory John) (1959- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/costikyan_greg
- Costner, Kevin (1955- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Kevin_Costner
- Côté, Denis (1954- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/cote_denis
- Cotronis, George (1985- ) (stories) (art)
- See www.ravenkult.com
- Cotterell, Anthony (1916-1944?) (stories)
- See historypage.net/ac-chronology
- Cotterell, Constance A. M. ({c}1865-?) (stories)
- Daughter of George Cotterell
- Cotterill, Steve (fl. 2010s) (stories)
- See shoresofnight.blogspot.co.uk
- Cottier, P(enelope) S(usan) (fl. 2000s-2010s) (stories)
- See pscottier.com
- Cotton, John (1925-2003) (stories)
- See www.theguardian.com/news/2003/apr/02/guardianobituaries.booksobituaries
- Cotton, Will(iam Dudley, Jr.) (1912-1986) (stories)
- Born and died in Boston.
- Cottrell, (Ida) Dorothy (Wilkinson Ottley) (1902-1957) (stories)
- Born in Picton, New South Wales; lived in America from 1939; died in Homestead, Florida.
- Cottrell, Leonard (Eric) (1913-1974) (stories) (assoc.)
- See en.wikipedia.org/wiki/Leonard_Cottrell
- Couchman, Charles B(ennington) (1879-1966) (stories)
- Public accountant and writer. Born in Odessa, Missouri; died in St. Petersburg, Florida.
- Coughlin, John A(lbert) (1885-1965) (art)
- See pulpartists.com/Coughlin.html
- Couillard, Arthur (1848-1905) (stories)
- See fr.wikipedia.org/wiki/Arthur_Dourliac
- Coulson, Juanita (Ruth, née Wellons) (1933- ) (stories) (art) (assoc.)
- See www.sf-encyclopedia.com/entry/coulson_juanita
- Coulson, Robert (Stratton) (1928-1999) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/coulson_robert
- Coulthart, Rebecca (fl. 2010s) (art)
- See www.batterypoweredpotato.deviantart.com
- Counihan, Deirdre (fl. 1990s-2010s) (stories) (art) (assoc.)
- See dcounihan.com
- Counter, Ben (fl. 1990s-2010s) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/counter_ben
- Coupe, Carla (fl. 2010s) (stories)
- See carlacoupe.com
- Courlander, Alphonse (1881-1914) (stories)
- See bearalley.blogspot.co.uk/2007/08/alphonse-courlander.html
- Cournos, Helen Sybil Norton Kestner (1893-1959) (stories)
- She was married to John Cournos, but before that to Harry Nelson Atwood and Alfred W. Satterthwaite; most records do not include her Sybil Norton middle names.
- Cournos, John [born Ivan Grigorievich Korshun] (1881-1966) (stories) (assoc.)
- Husband of Helen Sybil Norton Kestner Cournos.
- Courtenay, Louisa (Bithia) ({c}1815-1904) (stories)
- See www.wikitree.com/wiki/Courtenay-743
- Courthope, George L(oyd, 1st Baron Courthope) (1877-1955) (stories)
- See en.wikipedia.org/wiki/George_Courthope,_1st_Baron_Courthope
- Courtier, S(idney) H(obson) (1904-1974) (stories)
- Author and teacher. Born in Kangaroo Flat, Victoria, Australia.
- Cousins, E(dmund) G(eorge) (1893-1996)
- See www.sf-encyclopedia.com/entry/cousins_e_g
- Cousins, Norman (1915-1990) (stories)
- See en.wikipedia.org/wiki/Norman_Cousins
- Cousteau, Jacques-Yves (1910-1997) (stories)
- See en.wikipedia.org/wiki/Jacques_Cousteau
- Cousteau, Philippe (1940-1979) (stories)
- See en.wikipedia.org/wiki/Philippe_Cousteau
- Coutts, Ed (fl. 2010s) (art)
- See edcouttsart.com
- Couturier, Scott J. (fl. 2010s) (stories)
- See scottjcouturier.blogspot.com
- Couvillier, Willis (E.) (1959- ) (stories)
- See will-couvillier.livejournal.com
- Couzens, Gary (1964- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/couzens_gary
- Couzens, H(enry) D(e Clifford) (1872-1914) (stories) (art)
- See pulpflakes.blogspot.com/2013/10/h-d-couzens-auto-biography-in-campfire.html
- Couzyn, Jeni (1942- ) (stories)
- See en.wikipedia.org/wiki/Jeni_Couzyn
- Coveleskie, Stanley (Anthony) [born Stanislaus Kowalewski] (1889-1984) (stories)
- See en.wikipedia.org/wiki/Stan_Coveleski
- Cover, Arthur Byron (1950- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/cover_arthur_byron
- Coverdale, Linda (fl. 1980s-2010s) (stories)
- See en.wikipedia.org/wiki/Linda_Coverdale
- Covey, Arthur S(inclair) (1877-1960) (art)
- See www.askart.com/askart/artist.aspx?artist=22794
- Covey, Stephen D. (fl. 2010s) (stories)
- See www.stephendcovey.com
- Coville, Bruce (Farrington) (1950- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/coville_bruce
- Covina, Gina (1952- ) (stories)
- See www.sf-encyclopedia.com/entry/covina_gina
- Cowan, Bertha Muzzy Bower Sinclair (1871-1940) (stories)
- Author of numerous western novels. Born in Cleveland, Minnesota; died in Hollywood, California.
- Cowan, (Jane) G(ertrude) K(ent) (1872-1959) (stories)
- Born in Birkenhead, England; married John James Cowan in 1897; died in Carmarthen, England, area.
- Cowan, James (1870-1943) (stories)
- See en.wikipedia.org/wiki/James_Cowan_(New_Zealand_writer)
- Cowan, Lore (1901-1989) (stories)
- See www.imdb.com/name/nm0184598/
- Cowan, Sada (1882-1943) (stories)
- Born in Boston; died in Los Angeles; screenwriter and playwright whose career began in the silent film era; later a novelist.
- Cowan, Samuel (1901-1964) (stories) (assoc.)
- See en.wikipedia.org/wiki/Sam_Cowan
- Coward, Noël (1899-1973) (stories) (assoc.)
- See en.wikipedia.org/wiki/No%C3%ABl_Coward
- Cowden-Clarke, Mary (Victoria, née Novello) (1809-1898) (stories)
- See en.wikipedia.org/wiki/Mary_Cowden_Clarke
- Cowdrey, Albert E. (1933- ) (stories)
- See www.sf-encyclopedia.com/entry/cowdrey_albert_e
- Cowell-Stepney, [Sir] (Emile Algernon) Arthur (Keppel) (1834-1909) (stories)
- See en.wikipedia.org/wiki/Sir_Arthur_Cowell-Stepney
- Cowen, Frederic Hymen (1852-1935) (stories) (assoc.)
- See en.wikipedia.org/wiki/Frederic_Hymen_Cowen
- Cowen, Percy E. (1883-1923) (art)
- Born in Marthas Vinyard, Massachusetts; died in New Bedford, Massachusetts.
- Cowhig, Frances Ya-Chu (fl. 2010s) (stories)
- See www.francesyachucowhig.com
- Cowie, Donald (John) (1911-2006) (stories)
- See www.sf-encyclopedia.com/entry/cowie_donald
- Cowl, Jane (1883-1950) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jane_Cowl
- Cowley, Abraham (1618-1667) (stories) (assoc.)
- See en.wikipedia.org/wiki/Abraham_Cowley
- Cowley, Jason (1966- ) (stories)
- Journalist and critic.
- Cowley, Meg (fl. 2010s) (stories)
- See megcowley.com
- Cowley, N(ellie) Suydam (1877-1945) (stories)
- Poet. Resident in Glendora, California and Douglas, Arizona.
- Cowper, F(rank) Cadogan (1877-1958) (stories) (art) (assoc.)
- See en.wikipedia.org/wiki/Frank_Cadogan_Cowper
- Cowper, Frank (1849-1930) (stories)
- Born in London; sailor; explored by boat the waters of France, Belgium, Channel Islands, Britain, etc., and extensively wrote and lectured on yachting.
- Cowper, Richard; pseudonym of John Middleton Murry (1926-2002) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/cowper_richard
- Cowper, William (1731-1800) (stories) (assoc.)
- See en.wikipedia.org/wiki/William_Cowper
- Cox, A(nthony) B(erkeley) (1893-1971) (stories)
- See en.wikipedia.org/wiki/Anthony_Berkeley_Cox
- Cox, Cardinal (fl. 1990s-2010s) (stories)
- See atlanteanpublishing.wikia.com/wiki/Cardinal_Cox
- Cox, [Sir] Edmund C(harles) (1856-1935) (stories)
- Born in Exeter. With Indian Imperial Police.
- Cox, Edward (fl. 2000s-2010s) (stories) (assoc.)
- See edwardcox.net
- Cox, Emily (fl. 1990s-2010s) (stories)
- See en.wikipedia.org/wiki/Emily_Cox_(puzzle_writer)
- Cox, Erle (1873-1950) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/cox_erle