- Clarke, Powhatan (Henry), U.S.A. (1862-1893) (stories)
- See en.wikipedia.org/wiki/Powhatan_Henry_Clarke
- Clausen, Carl (1885-1954) (stories)
- Born in Denmark; he was a sailor, miner, pearl-fisher, life insurance salesman, window cleaner, lumber jack, copra trader and opera singer before turning to writing; came to the U.S. in 1906 knowing practically no English; died in Delaware Water Gap, Pennsylvania.
- Claussen, W(illiam) Edmunds (1907-1974) (stories)
- See bearalley.blogspot.co.uk/2016/10/w-edmunds-claussen.html
- Clay, Charles (1906-1980) (stories)
- See www.collectionscanada.gc.ca/literaryarchives/027011-200.030-e.html
- Clement, Ernest C. (1908-1985) (stories)
- Former lead writer for Modern Romance.
- Clifford, [Sir] Hugh (Charles) (1866-1941) (stories)
- See en.wikipedia.org/wiki/Hugh_Clifford
- Cloud, (C.) Carey (1899-1984) (art)
- See www.askart.com/askart/c/carey_c_carey_cloud/carey_c_carey_cloud.aspx
- Clymer, John (Ford) (1907-1989) (art)
- See pulpartists.com/Clymer.html
- Cobb, Cleo Frisbie (1925-2011) (stories)
- See www.legacy.com/obituaries/statesman/obituary.aspx?page=lifestory&pid=155413129
- Cobb, Irvin S(hrewsbury) (1876-1944) (stories)
- See en.wikipedia.org/wiki/Irvin_S._Cobb
- Coburn, Walter J(ohn) (1889-1971) (stories) (assoc.)
- Writer of western novels and short stories. Born in White Sulphur Springs, Montana Territory; lived in Arizona.
- Cockroft, W(ilfred) P. (1909-1992) (stories)
- See www.sf-encyclopedia.com/entry/cockroft_w_p
- Coe, Charles Francis (1890-1956) (stories)
- Born in Buffalo, N.Y.; Joined the Navy at 17, spent 5 years as a professional fighter, then a radio sports announcer (and may have invented ringside commentary), then took up writing, went to Hollywood as a screenwriter, then became a lawyer and general counsel for the motion picture producers; moved to Florida and practiced there; became editor and publisher of the Palm Beach Post; died in Palm Beach, FL. Father of Betty Coe Spicer.
- Coe, Charles H. (1890-1956) (stories)
- American mystery writer.
- Cohen, Octavus Roy (1891-1959) (stories)
- Noted writer. Born in Charleston, South Carolina; died in Los Angeles, California.
- Coleman, Jane Candia (fl. 1980s-2000s) (stories) (assoc.)
- See www.hanksville.org/voyage/writers/coleman.html
- Coleridge, Samuel Taylor (1772-1834) (stories)
- See en.wikipedia.org/wiki/Samuel_Taylor_Coleridge
- Colin, Galen C(yril) (1890-1973) (stories)
- See tellersofweirdtales.blogspot.co.uk/2014/10/galen-c-colin-1890-1973.html
- Collins, Dabney Otis (?-{c}1986) (stories)
- Writer. Born in Alabama; lived in Denver, Colorado.
- Collins, (Cuthbert) Dale (1897-1956) (stories)
- See www.sf-encyclopedia.com/entry/collins_dale
- Collins, Shad (1915- ) (stories)
- Arizona writer, not to be confused with the musician of the same name.
- Collins, (William) Wilkie (1824-1889) (stories)
- See en.wikipedia.org/wiki/Wilkie_Collins
- Collison, (Clyde) Wilson (1893-1941) (stories)
- Born in Ohio; a playwright.
- Colter, Eli; pseudonym of May Eliza Frost (1890-1984) (stories)
- See tellersofweirdtales.blogspot.com/2012/05/eli-colter-1890-1984.html
- Combes, Helen (1864-1949) (stories)
- Journalist, writer and poet. Born in England; died in Los Angeles, California.
- Comfort, Will Levington (1878-1932) (stories)
- Born in Kalamazoo, Michigan; novelist and short story writer; war correspondent for various newspapers; sportsman; veteran of Spanish-American War; died in Los Angeles, California.
- Condon, Frank (1882-1940) (stories)
- Born in Toledo, Ohio and a reporter there; advertising man in NYC; then screenwriter and magazine writer in L.A.; died in Beverly Hills, California
- Conine, R. A. (fl. 1990s-2010s) (stories)
- See www.raconine.com
- Connolly, James B(rendan) (1868-1957) (stories)
- Author of sea stories, 1896 Olympic champion (gold metal in the triple jump). Born in South Boston, Massachusetts; died in Boston, Massachusetts.
- Considine, John L(yons) (1871-1951) (stories)
- See genealogytrails.com/nev/carson/bios/considinejohn.html
- Cook, Albert Jay (fl. 1910s-1930s) (stories)
- Probably not the banker and surgeon (1849?-1931).
- Cook, Berton E(llsworth) (1889-1958) (stories)
- See pulpflakes.blogspot.co.uk/2017/02/berton-e-cook-sailor-teacher-author.html
- Cook, Ida (1904-1986) (stories)
- See en.wikipedia.org/wiki/Mary_Burchell
- Cook, Will(iam Everett) (1921-1964) (stories) (assoc.)
- See en.wikipedia.org/wiki/Will_Cook_(writer)
- Cook, William Wallace (1867-1933) (stories)
- See www.sf-encyclopedia.com/entry/cook_william_wallace
- Cooke, Grace MacGowan (1863-1944) (stories)
- Born in Ohio; grew up in Chattanooga; lived later in N.J. and California. Sister of Alice MacGowan.
- Cooksley, (Sidney) Bert (fl. 1920s-1940s) (stories)
- California writer and poet.
- Coombs, Charles (Ira) Chick (1914-1994) (stories)
- See www.sf-encyclopedia.com/entry/coombs_charles_i
- Cooper, Caribou Bill [i.e., William Frank Cooper] (1872-1933) (stories)
- See rapsvault.blogspot.co.uk/2013/07/caribou-bill.html
- Cooper, Courtney Ryley (1886-1940) (stories)
- Born in Kansas City, Missouri, ran away age 16 to become a circus clown; later sign painter and performer, circus general manager, press agent for William Buffalo Bill Cody; journalist in Kansas City, New York and Denver; lived in Florida; died in New York City.
- Cooper, Edgar L(eake) (1892-1945) (stories)
- Born and died in Texas; writer of western pulp fiction.
- Cooper, Gary (1901-1961) (stories) (assoc.)
- See en.wikipedia.org/wiki/Gary_Cooper
- Cooper, H. S. (fl. 1890s-1920s) (stories)
- Explorer. Born in the Isle of Wight, England; lived in Texas.
- Corcoran, William (B.) (1901-1969?) (stories)
- Born in Pennsylvania; writer and editor. Editor of Adventure from March 1934 until August 1934.
- Costanza, Peter (Anthony) (1913-1984) (art)
- See pulpartists.com/Costanza.html
- Cotton, Will(iam Dudley, Jr.) (1912-1986) (stories)
- Born and died in Boston.
- Coughlin, John A(lbert) (1885-1965) (art)
- See pulpartists.com/Coughlin.html
- Cowan, Bertha Muzzy Bower Sinclair (1871-1940) (stories)
- Author of numerous western novels. Born in Cleveland, Minnesota; died in Hollywood, California.
- Cowley, N(ellie) Suydam (1877-1945) (stories)
- Poet. Resident in Glendora, California and Douglas, Arizona.
- Cowper, William (1731-1800) (stories)
- See en.wikipedia.org/wiki/William_Cowper
- Cox, William R(obert) (1901-1988) (stories) (assoc.)
- Writer of westerns and mystery novels. Born in Peapack, New Jersey; died in Los Angeles, California.
- Craft, Fred (Page) (1883-1935) (art)
- See pulpartists.com/Craft.html
- Craigie, (Henry) Hamilton (1880-1956) (stories)
- Born in Connecticut; died in Florida; prolific pulp writer.
- Crair, Mel (1923-2007) (art)
- See pulpartists.com/Crair.html
- Crane, Earl Benham (fl. 1920s-1930s) (stories)
- From the Northwest.
- Crane, Frank, D.D. (1861-1928) (stories)
- See en.wikiquote.org/wiki/Frank_Crane
- Crane, (James) Leo (1881-?) (stories)
- Author. Born in Baltimore, Maryland; lived in Boulder City, Nevada.
- Cranford, Scott ({c}1967- ) (stories)
- See www.burbankleader.com/entertainment/tn-gnp-0904-superman,0,7794543.story
- Crawford, Griff [i.e., Oliver Griffith Crawford] (1876-1935) (stories)
- See www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=38834524
- Crawford, Vesta P(ierce) (1899-1983) (stories)
- See nwda.orbiscascade.org/ark:/80444/xv23171
- Creasey, John (1908-1973) (stories)
- See en.wikipedia.org/wiki/John_Creasey
- Creed, Gene (Krieg) (1909-1993) (stories)
- See www.cowgirl.net/portfolios/gene-krieg-creed
- Crisp, Steven (fl. 1980s-2000s) (art)
- See crispart.co.uk
- Crombie, Charles (Exeter Devereux) (1880-1967) (art)
- See en.wikipedia.org/wiki/Charles_Exeter_Devereux_Crombie
- Crosby, Bob [i.e., Robert Anderson Crosby] (1897-1947) (stories)
- See plainshumanities.unl.edu/encyclopedia/doc/egp.sr.011
- Crossen, Kendell Foster (1910-1981) (stories)
- See www.sf-encyclopedia.com/entry/crossen_kendell_foster
- Cruickshank, Harold (F.) (1893-1965) (stories)
- See www.ageofaces.net/authors-artists/harold-f-cruickshank/
- Crump, J(ames) Irving (1887-1979) (stories)
- See www.sf-encyclopedia.com/entry/crump_irving
- Cumming-Skinner, Dugald Matheson (1902-1956) (stories)
- Born in Findhorn, Morayshire, Scotland; died in Aberdeen, Scotland; prolific fiction author (8½ million words published 1922-1934); also wrote radio plays.
- Cummings, Ray(mond King) (1887-1957) (stories)
- See www.sf-encyclopedia.com/entry/cummings_ray
- Cunningham, Eugene (1896-1957) (stories)
- See www.tshaonline.org/handbook/online/articles/fcu59
- Cunningham, Jock (fl. 1940s) (stories)
- Montana writer.
- Cunningham, John M(arshall) (1915-2002) (stories) (assoc.)
- See en.wikipedia.org/wiki/John_W._Cunningham
- Curry, John Steuart (1897-1946) (art)
- See en.wikipedia.org/wiki/John_Steuart_Curry
- Curry, Peggy S(imson) (1911-1987) (stories)
- See wiki.wyomingauthors.org/w/page/12627313/Peggy%20Simson%20Curry
- Curry, Tom [i.e., Thomas Albert Curry, Jr.] (1900-1976) (stories)
- See archiveswest.orbiscascade.org/ark:/80444/xv84823
- Curwood, James Oliver (1878-1927) (stories)
- Born in Owosso, Michigan.
- Cushman, Dan (1909-2001) (stories)
- Novelist. Born in Osceola County, Michigan; lived in Great Falls, Montana.
- Dallas, [Captain] Oswald (Cecil David Donald) ({c}1854-1942) (stories)
- See www.sf-encyclopedia.com/entry/dallas_oswald
- Dalrymple, Byron W(illiam) (1910-1994) (stories)
- Writer. Born in Fostoria, Michigan; lived in Texas.
- Dalrymple, Leona [i.e., Carrie Leona Dalrymple Wilson] (1884-1968) (stories)
- See en.wikipedia.org/wiki/Leona_Dalrymple
- Dalton, Emmett (1871-1937) (stories)
- Outlaw, last surviving member of the Dalton Gang; after his release from prison, he spent his last years as a real estate dealer and a contractor. He died in Los Angeles, California.
- Dalton, Gilbert Lawford (1904-1963) (stories)
- See en.wikipedia.org/wiki/Gilbert_Lawford_Dalton
- Daly, Carroll John (1889-1958) (stories)
- Born in Yonkers, N.Y.
- Daly, R(obert) W(elter) (1916-1975) (stories)
- Educator, historian, editor, and author. Born in Chicago, Illinois.
- DAmmassa, Don(ald Eugene) (1946- ) (stories)
- See www.sf-encyclopedia.com/entry/dammassa_don
- Dangerfield, Clinton; pseudonym of Ella Howard Bryan (1872-1954) (stories) (assoc.)
- See tellersofweirdtales.blogspot.co.uk/2011/05/clinton-dangerfield-1872-1954.html
- Daniels, Norman (Arthur) [born Norman Arthur Danberg] (1905-1995) (stories)
- See www.sf-encyclopedia.com/entry/daniels_norman_a
- Daniels, Roger (fl. 1910s-1930s) (stories)
- Journalist. Born in Wales; lived in New York City.
- Davies, Mary Carolyn (1888-1966?) (stories)
- See www.poetryfoundation.org/poets/mary-carolyn-davies
- Davis, Frederick C(lyde) (1902-1977) (stories)
- See www.sf-encyclopedia.com/entry/davis_frederick_c
- Davis, Harold A(rvine) (1903-1955) (stories)
- See www.sf-encyclopedia.com/entry/davis_harold_a
- Davis, Howard Ellis (1883-1951) (stories)
- See tellersofweirdtales.blogspot.co.uk/2014/10/howard-ellis-davis-1883-1951.html