- Roberts, Philip (M.) (fl. 2000s-2010s) (stories)
- See www.philipmroberts.com
- Roberts, Terence; pseudonym of Ivan T. Sanderson (1911-1973) (stories)
- See www.sf-encyclopedia.com/entry/roberts_terence
- Roberts, (George Edward) Theodore Goodridge (1877-1953) (stories)
- See en.wikipedia.org/wiki/Theodore_Goodridge_Roberts
- Roberts, W(alter) Adolphe (1886-1962) (stories)
- Born in Kingston, Jamaica; newspaper and magazine editor; lived on Staten Island; died in London on a visit to England.
- Robertson, Colin (1906-1980) (stories)
- Note: Born Colin Robertson Cooper in Sculcoates, Yorkshire, but the family name was changed to Robertson before the 1911 census.
- Robertson, Frank C(hester) (1890-1969) (stories)
- Prolific writer of westerns; brother of Obe Robertson. Born in Moscow, Idaho; died in Springfield, Utah (?).
- Robertson, Obe (A.) (1884-?) (stories)
- Writer; brother of Frank C. Robertson. Born in Idaho.
- Robeson, Kenneth; house pseudonym (fl. 1930s-2010s) (stories)
- See www.sf-encyclopedia.com/entry/robeson_kenneth
- Robichaud, Daniel R., II (fl. 2000s-2010s) (stories)
- See www.smashwords.com/profile/view/DRRobichaud
- Robinett, Rena (fl. 2010s) (stories)
- See thenomadrena.blogspot.co.uk
- Robinson, Ernest H(erbert) (1880-1947) (stories)
- Born in London; educated at Alleyns School, Dulwich; editor and author.
- Robinson, Gregor (fl. 1980s-1990s) (stories)
- Head of a firm of economic consultants; living in Toronto.
- Robinson, Jeremy (1974- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jeremy_Robinson
- Robinson, Lee (1890-1962) (stories)
- Advertising manager, traveller. Born in North Carolina (?); died in New York City.
- Robinson, Sheila (Mary) (1928- ) (stories)
- See www.panmacmillan.com/authors/sheila-radley
- Robinson, Thomas Heath (1869-1954) (art)
- See www.lookandlearn.com/blog/10387/thomas-heath-robinson
- Robinson, Todd (fl. 2000s-2010s) (stories) (assoc.)
- See thuglit.com/about/
- Roche, Arthur Somers (1883-1935) (stories)
- Journalist and novelist. Born in Somerville, Massachusetts; studied law, but after practicing several years he became a journalist for the New York World in 1906; later lived in Florida and died in Palm Beach.
- Rochester, Geo(rge) E(rnest) (1898-1966) (stories)
- See www.sf-encyclopedia.com/entry/rochester_george_e
- Rockey, Howard (Primrose) (1886-1934) (stories)
- Born in Philadelphia.
- Rocklynne, Ross; pseudonym of Ross Louis Rocklin (1913-1988) (stories)
- See www.sf-encyclopedia.com/entry/rocklynne_ross
- Roden, H(enry) W(isdom) (1895-1963) (stories)
- Born in Dallas. Executive of corporations in food industry.
- Rodewald, Fred C(harles) (1905-1955) (art)
- See pulpartists.com/Rodewald.html
- Rodriguez, Robert (Anthony) (1968- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Robert_Rodriguez
- Rodriguez, Stephanie (fl. 2000s-2010s) (art)
- See stephanierodriguezart.com
- Roe, Vingie E(ve) [Mrs. Raymond C. Lawton] (1879-1958) (stories)
- Born in Oxford, Kansas.
- Rogers, Chris(tine A.) (1944- ) (stories)
- Living in Houston, TX.
- Rogers, (Reginald) Hubert (1898-1982) (art)
- See pulpartists.com/Rogers.html
- Rogers, Joel Townsley (1896-1984) (stories)
- See tellersofweirdtales.blogspot.co.uk/2016/07/joel-townsley-rogers-1896-1984-part-one.html
- Rogers, Ruth (née Alexander) (1879-1958) (stories)
- See bearalley.blogspot.co.uk/2007/10/ruth-alexander.html
- Rogers, Stephen D. (fl. 1980s-2010s) (stories)
- See www.stephendrogers.com
- Rogers, Tristan (1946- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Tristan_Rogers
- Rogers, Wayne; pseudonym of A. H. Bittner (1897-1966) (stories)
- See www.sf-encyclopedia.com/entry/rogers_wayne
- Rogow, Roberta (Winston) (1942- ) (stories)
- Mother of Miriam Ann Moore.
- Rohde, Robert H. (1889-?) (stories)
- Reporter for New York Tribune.
- Rohde, William L. (1918-2000) (stories)
- Born in Dallas. Living in Florida in 1950s.
- Rohmer, Sax; pseudonym of A. Sarsfield Ward (1883-1959) (stories) (assoc.)
- See en.wikipedia.org/wiki/Sax_Rohmer
- Rohr, J. (fl. 2010s) (stories)
- See honestyisnotcontagious.com
- Rohrbacher, Chad (fl. 2010s) (stories)
- See rohrbacher.wordpress.com
- Roland, Charles (fl. 2010s) (stories)
- See charlesrolandauthor.com
- Rolison, Loretta K. (fl. 2010s) (stories)
- See lorettakrolisonart.blogspot.co.uk
- Rollins, James; pseudonym of James Paul Czajkowski (1961- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/James_Rollins
- Rollins, William (Stacy), Jr. (1897-1950) (stories)
- Born in Belmont, Massachusetts; served in American Ambulance Unit in WWI; later living in New York City; magazine writer.
- Romanovic, Ljilja ({c}1986- ) (stories) (assoc.)
- See www.moonchild-ljilja.deviantart.com
- Rommel, Keith (fl. 2000s-2010s) (stories)
- See keithrommel.weebly.com/author-bio.html
- Ronald, James (1905-1972) (stories)
- Born and died in Glasgow, but lived in Fairfield, Connecticut from 1938 to 1955, when he was deported.
- Roof, Katharine Metcalf (1871-1950s) (stories)
- See desturmobed.blogspot.com/2019/04/katharine-metcalf-roof.html
- Rorhus, Suzanne Berube (fl. 2010s) (stories)
- See www.rorhus.com/bio
- Rosaire, Forrest (1902-1977) (stories)
- Born in Chicago; for some years an oil explorer, then short story writer in California.
- Rosborough, Mary Freels (1896-1997) (stories)
- See www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=50755175
- Roscoe, John (1921-1983?) (stories)
- Private investigator in Kansas City, Missouri.
- Roscoe, Theodore (1906-1992) (stories)
- See pulpflakes.blogspot.com/2012/08/TheodoreRoscoe.html
- Rose, Alvin Emanuel (1903-1983) (stories)
- Reporter for the Chicago Tribune, later city editor of the Chicago Times; executive director of the Chicago Housing Authority.
- Rose, Edward E(verett) (1862-1939) (stories)
- Born in Stanstead, Quebec, Canada; dramatist.
- Rose, Karen [born Karen Rose Hafer] (1964- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Karen_Rose
- Rose, M. J.; pseudonym of Melisse J. Shapiro (1963- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/M.J._Rose
- Rose, Richard M(arkley) (1931- ) (stories)
- Born in Indiana; executive in a firm of stockbrokers.
- Rosenblum, Mary (1952-2018) (stories)
- See www.sf-encyclopedia.com/entry/rosenblum_mary
- Rosenkrantz, Arild (1870-1964) (stories)
- See en.wikipedia.org/wiki/Arild_Rosenkrantz
- Rosenkrantz, [Baron] Palle (Adam Vilhelm) (1867-1941) (stories)
- Born in Elsinore, Denmark; died in Charlottelund; lawyer, writer, translator, screenwriter for silent films.
- Rosenquist, G. C. (1966- ) (stories)
- See www.gcrosenquist.com/qa.html
- Rosi, Cynthia (fl. 2000s) (stories)
- Reporter and stringer for newspapers in England; came to Columbus, Ohio, in 2003; freelance writer.
- Ross, A(rthur) Leslie (Jr.) (1910-1989) (art)
- See pulpartists.com/Ross.html
- Ross, Brian G(rant) (1976- ) (stories)
- See briangrantross.com
- Ross, Caleb J(ohn) (1982- ) (stories)
- See www.calebjross.com
- Ross, Gary Earl (fl. 1990s-2010s) (stories)
- See www.mwany.org/2017/03/mug-shot-gary-earl-ross/
- Ross, Irwin (1919-2005) (stories)
- See prabook.com/web/irwin.ross/10660
- Ross, John (fl. 1940s) (stories)
- probably a pseudonym for John L. Benton.
- Ross, Sam (1912-1998) (stories)
- Novelist and screenwriter. Born in Kiev, Russia; lived in California.
- Ross, Stephen (fl. 2000s-2010s) (stories)
- See www.stephenross.net
- Ross, W(illiam) E(dward) D(aniel) (1912-1995) (stories)
- At least some of the listed titles are gothics.
- Rothman-Hicks, Anne (fl. 2010s) (stories) (assoc.)
- See museituppublishing.com/bookstore/index.php/our-authors/58-our-authors/authors-h/401-anne-rothman-hicks-and-kenneth-hicks
- Roueché, Berton (1910-1994) (stories)
- See en.wikipedia.org/wiki/Berton_Rouech%C3%A9
- Rouleau, Bryan Paul (fl. 2010s) (stories)
- See bryanpaulrouleau.com/about
- Rouse, William Merriam (1884-1937) (stories) (assoc.)
- Writer and journalist. Born in Alabany, New York; lived in Westport, New York.
- Rousseau, Victor; pseudonym of Victor Rousseau Emanuel (1879-1960) (stories)
- See www.sf-encyclopedia.com/entry/rousseau_victor
- Roussel, Hubert (de Tavanne) (1897?-1980?) (stories)
- Texas writer.
- Rovere, Richard H(alworth) (1915-1979) (stories)
- See en.wikipedia.org/wiki/Richard_Rovere
- Rowan, Richard Wilmer (1894-1964) (stories) (assoc.)
- Born in Philadelphia.
- Rowe, Jennifer (June) (1948- ) (stories) (assoc.)
- See en.wikipedia.org/wiki/Jennifer_Rowe
- Rowe, John G(abriel) (1873-1956) (stories)
- Born and educated in Liverpool; editor, scenarist, novelist and historian. It appears he died as John Thomas Rowe; birth name uncertain.
- Rowland, Henry C(ottrell) (1874-1933) (stories)
- Born in New York City; died in Washington D.C.; studied medicine at Yale School of Medicine and elsewhere; practiced medicine in New York City and abroad; special agent of Intelligence Department in WWI; built a schooner and used it to cruise about the world.
- Rowland, John (Herbert Shelley) (1907-1984) (stories)
- Unitarian minister.
- Rowson, Pauline (fl. 2010s) (stories)
- See www.rowmark.co.uk
- Roy, Lori (fl. 2010s) (stories) (assoc.)
- See www.loriroy.com
- Royle, Nicholas (John) (1963- ) (stories)
- Novelist, short story writer, editor and journalist living in London.
- Rozen, George J(erome) (1895-1973) (art)
- See pulpartists.com/Rozen,G.html
- Rozen, Jerome G(eorge) (1895-1987) (art)
- See pulpartists.com/Rozen,J.html
- Rubas, Joseph (fl. 2010s) (stories)
- See josephrubas.com
- Rubin, Mann (1927-2013) (stories)
- See en.wikipedia.org/wiki/Mann_Rubin
- Rubin, Rick [i.e., Richard M. Rubin] (1931-2014) (stories)
- See obits.oregonlive.com/obituaries/oregon/obituary.aspx?n=richard-m-rubin-rick&pid=172672466&fhid=22686
- Ruby, Michele (fl. 2010s) (stories)
- See www.micheleruby.com
- Rucka, Greg (1969- ) (stories) (assoc.)
- See www.sf-encyclopedia.com/entry/rucka_greg
- Rud, Anthony M(elville) (1893-1942) (stories) (assoc.)
- See tellersofweirdtales.blogspot.co.uk/2016/02/anthony-rud-and-tango-dancer-murder.html
- Ruiz, Angeles (fl. 2010s) (stories) (art) (assoc.)
- See la--boheme.deviantart.com
- Runyon, Charles (West) (1928- ) (stories)
- See www.sf-encyclopedia.com/entry/runyon_charles_w
- Runyon, (Alfred) Damon (1880-1946) (stories)
- Author, poet and journalist. Born in Manhattan, Kansas; died in New York City.