- Niven, Larry [i.e., Laurence van Cott Niven] (1938- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/niven_larry
- Nolan, William F(rancis) (1928- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/nolan_william_f
- Noname; house pseudonym
- See www.sf-encyclopedia.com/entry/noname
- Norden, Eric; pseudonym of Eric Pelletier (1899-1979) (books) (stories)
- See www.sf-encyclopedia.com/entry/norden_eric
- Norris, (Benjamin) Frank(lin) (1870-1902) (books) (stories)
- See www.sf-encyclopedia.com/entry/norris_frank
- Norton, Alden H(olmes) (1903-1987) (books) (stories)
- Author and 13th editor of Adventure magazine. Born in Lynn, Massachusetts; died in Brooklyn, New York. Norton contributed prolifically to Adventure, but he did so under a number of pseudonyms.
- Norton, Andre [born Alice Mary Norton] (1912-2005) (books) (stories)
- See www.sf-encyclopedia.com/entry/norton_andre
- Nourse, Alan E(dward) (1928-1992) (books) (stories)
- See www.sf-encyclopedia.com/entry/nourse_alan_e
- Noyes, Alfred (1880-1958) (books) (stories)
- See www.sf-encyclopedia.com/entry/noyes_alfred
- Nuetzel, Charles (Alexander) (1934- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/nuetzel_charles
- Nyberg, Björn (Emil Oscar) (1929- ) (books) (stories)
- See en.wikipedia.org/wiki/Bj%C3%B6rn_Nyberg
- Oates, Joyce Carol (1938- ) (books) (stories)
- See en.wikipedia.org/wiki/Joyce_Carol_Oates
- Oboler, Arch(ie) (1909-1987) (stories)
- See www.sf-encyclopedia.com/entry/oboler_arch
- OBrien, David Wright (1918-1944) (stories)
- See www.sf-encyclopedia.com/entry/obrien_david_wright
- OBrien, (Michael) Fitz-James (1828-1862) (books) (stories)
- See www.sf-encyclopedia.com/entry/obrien_fitz-james
- ODonnell, Kevin, Jr. (1950-2012) (stories)
- See www.sf-encyclopedia.com/entry/odonnell_kevin_jr
- Offutt, Andrew J(efferson, V) (1934-2013) (books) (stories)
- See www.sf-encyclopedia.com/entry/offutt_andrew_j
- Olander, Joseph D(avid) (1939- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/olander_joseph_d
- OLeary, Brian (Todd) (1940- ) (stories)
- See www.sf-encyclopedia.com/entry/oleary_brian
- Oliver, (Symmes) Chad(wick) (1928-1993) (books) (stories)
- See www.sf-encyclopedia.com/entry/oliver_chad
- Olsen, Bob; pseudonym of Alfred J. Olsen, Jr. (1884-1956) (stories)
- See www.sf-encyclopedia.com/entry/olsen_bob
- Olson, Eugene E. (1936- ) (stories)
- Writer. Born in Bode, Iowa; lives in Arizona.
- ONeil, Denny [i.e., Dennis Joseph ONeil] (1939- ) (stories)
- See www.sf-encyclopedia.com/entry/oneil_dennis
- Onions, (George) Oliver (1873-1961) (books) (stories)
- Changed his name legally to George Oliver in 1918, but continued to write as Oliver Onions.
- Oppenheim, E(dward) Phillips (1866-1946) (stories)
- See www.sf-encyclopedia.com/entry/oppenheim_e_phillips
- Orczy, Baroness (Emmuska) [i.e., Emma Magdalena Rosalia Maria Josefa Barbara Barstow, Baroness Orczy] (1865-1947) (stories)
- . Novelist and playwright remembered for her fictional character The Scarlet Pimpernel and also for her mysteries involving the Old Man in the Corner. Born in Tarna-Eors, Hungary; died in London, England.
See also en.wikipedia.org/wiki/Baroness_Emma_Orczy
- ORourke, Frank (1916-1989) (stories)
- Prolific writer of mysteries, westerns and juvenile stories; also used pseudonyms Kevin Connor, Frank OMalley, and Patrick OMalley. Born in Denver, Colorado; died in Tucson, Arizona.
See also www.sf-encyclopedia.com/entry/orourke_frank
- Orwell, George; pseudonym of Eric Blair (1903-1950) (stories)
- See en.wikipedia.org/wiki/George_Orwell
- OSullivan, Vincent (1868-1940) (books) (stories)
- Born in New York City; educated in France and at Oxford University, England; literary critic on London Daily Mail; contributed articles to American and English publications.
See also modjourn.org/render.php?view=mjp_object&id=mjp.2005.01.028
- Ottolengui, (Benjamin A.) Rodrigues (1861-1937) (stories)
- Born in Charleston, South Carolina.
See also www.sf-encyclopedia.com/entry/ottolengui_rodrigues
- Overholser, Stephen (1944- ) (stories)
- See www.sf-encyclopedia.com/entry/overholser_stephen
- Owen, Walter (1884-1953) (stories)
- See www.sf-encyclopedia.com/entry/owen_walter
- Owings, Mark (Samuel) (1945-2009) (stories)
- See www.sf-encyclopedia.com/entry/owings_mark
- Page, Norvell W(ooten) (1904-1961) (stories)
- See www.sf-encyclopedia.com/entry/page_norvell_w
- Pain, Barry (Eric Odell) (1864-1928) (books) (stories)
- See www.sf-encyclopedia.com/entry/pain_barry
- Painton, Frederick C. (1896?-1945) (stories)
- Writer, war correspondent. Died in Guam.
- Palmer, David R(eay) (1941- ) (stories)
- See www.sf-encyclopedia.com/entry/palmer_david
- Palmer, (Charles) Stuart (Hunter) (1905-1968) (stories)
- Born in Baraboo, Wisconsin.
- Paltock, Robert (1697-1767) (stories)
- See www.sf-encyclopedia.com/entry/paltock_robert
- Pangborn, Edgar (1909-1976) (books) (stories)
- See www.sf-encyclopedia.com/entry/pangborn_edgar
- Panshin, Alexei [i.e., Alexis Adams Panshin] (1940- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/panshin_alexei
- Panshin, Cory (Seidman) (1947- ) (stories)
- See www.sf-encyclopedia.com/entry/panshin_cory
- Parker, Richard (1915-1990) (stories)
- See www.sf-encyclopedia.com/entry/parker_richard
- Parnov, Yeremei (Iudovich) (1935- ) (stories)
- See www.sf-encyclopedia.com/entry/parnov_eremei
- Parry, Michel (Patrick) (1947-2014) (books) (stories)
- See bearalley.blogspot.co.uk/2014/11/michel-parry-1947-2014.html
- Paul, Barbara (Jeanne) (1931- ) (stories)
- See www.sf-encyclopedia.com/entry/paul_barbara
- Paul, Frank R(udolph) (1884-1963) (stories)
- See pulpartists.com/PF.html
- Payack, Peter (fl. 1975-2014) (stories)
- See peterpayack.info
- Peacock, Wilbur Scott (1915-1979) (stories)
- Editor, writer of short stories and television scripts. Born in Kansas; died in Los Angeles, California.
- Peake, Mervyn (Laurence) (1911-1968) (stories)
- See en.wikipedia.org/wiki/Mervyn_Peake
- Pearce, Brenda (1935- ) (stories)
- See www.sf-encyclopedia.com/entry/pearce_brenda
- Pearce, (Ann) Philippa (Christie) (1920-2006) (stories)
- See www.sf-encyclopedia.com/entry/pearce_philippa
- Pearson, Martin; pseudonym of Donald A. Wollheim (1914-1990) (stories)
- See www.sf-encyclopedia.com/entry/pearson_martin
- Pease, Howard (1863-1928) (books) (stories)
- Educated at Oxford; landowner and magistrate in Northumberland.
- Peattie, Elia W(ilkinson) (1862-1935) (books) (stories)
- Born in Kalamazoo, Michigan.
- Peck, Richard E(arl) (1936- ) (stories)
- See www.sf-encyclopedia.com/entry/peck_richard_e
- Peck, [Lady] Winifred (Frances Knox) (1882-1962) (stories)
- Born and educated in Oxford; lived in Edinburgh. Sister of Ronald A(rbuthnott) Knox.
- Pedler, Kit [i.e., Christopher Magnus Howard Pedler] (1927-1981) (stories)
- See www.sf-encyclopedia.com/entry/pedler_kit
- Peeples, Samuel A(nthony) (1917-1997) (stories)
- TV scriptwriter, film commentator.
See also en.wikipedia.org/wiki/Samuel_A._Peeples
- Peirce, Hayford (1942- ) (stories)
- Born in Maine; attended Exeter and Harvard; lived in Tahiti, with various business interests there, 1964-1988; living in Tucson since 1994; author of mysteries and science fiction.
See also www.sf-encyclopedia.com/entry/peirce_hayford
- Perkins, Frederic Beecher (1828-1899) (stories)
- Born in Hartford, Connecticut.
- Perry, Steve(n Carl) (1947- ) (stories)
- See www.sf-encyclopedia.com/entry/perry_steve
- Petaja, Emil (Theodore) (1915-2000) (books) (stories)
- See www.sf-encyclopedia.com/entry/petaja_emil
- Petrey, Susan C(andace) (1945-1980) (stories)
- See www.sf-encyclopedia.com/entry/petrey_susan_c
- Pflaum, George A. (fl. 1949-1965) (stories)
- Husband of Margaret St. Clair.
- Phelps, Gilbert (Henry, Jr.) (1915-1993) (stories)
- See www.sf-encyclopedia.com/entry/phelps_gilbert
- Phillifent, John T(homas) (1916-1976) (stories)
- See www.sf-encyclopedia.com/entry/phillifent_john_t
- Phillips, Alexander M(oore) (1907-1970) (stories)
- See www.sf-encyclopedia.com/entry/phillips_alexander_m
- Phillips, Peter (1920-2012) (stories)
- See www.sf-encyclopedia.com/entry/phillips_peter
- Phillips, Rog; pseudonym of Roger Philip Graham (1909-1965) (stories)
- See www.sf-encyclopedia.com/entry/phillips_rog
- Phillpotts, (Henry) Eden (1862-1960) (books) (stories)
- See www.sf-encyclopedia.com/entry/phillpotts_eden
- Philmus, Robert M(ichael) (1943- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/philmus_robert_m
- Pierce, Frank(lin) Richardson (1887-1966) (stories)
- Writer. Born in Greenfield, Massachusetts; died in Washington (?).
- Pierce, John J(eremy) (1941- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/pierce_john_j
- Pierce, John R(obinson) (1910-2002) (stories)
- See www.sf-encyclopedia.com/entry/pierce_john_r
- Piercy, Marge (1936- ) (stories)
- See www.sf-encyclopedia.com/entry/piercy_marge
- Piper, H(enry) Beam (1904-1964) (books) (stories)
- See www.sf-encyclopedia.com/entry/piper_h_beam
- Piserchia, Doris (Elaine) (1928- ) (stories)
- See www.sf-encyclopedia.com/entry/piserchia_doris
- Plato [{c}429-347 BC] (stories)
- See en.wikipedia.org/wiki/Plato
- Platt, Charles (Michael) (1945- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/platt_charles
- Plauger, P(hillip) J(ames) (1944- ) (stories)
- See www.sf-encyclopedia.com/entry/plauger_p_j
- Poe, Edgar Allan (1809-1849) (books) (stories)
- See en.wikipedia.org/wiki/Edgar_Allan_Poe
- Pohl, Frederik (George, Jr.) (1919-2013) (books) (stories)
- See www.sf-encyclopedia.com/entry/pohl_frederik
- Polidori, John William (1795-1821) (stories)
- See en.wikipedia.org/wiki/John_William_Polidori
- Pollack, Rachel (Grace) (1945- ) (stories)
- See www.sf-encyclopedia.com/entry/pollack_rachel
- Pollock, Frank Lillie (1876-1957) (stories)
- Canadian beekeeper and novelist.
See also www.sf-encyclopedia.com/entry/pollock_frank_lillie
- Pollock, Walter Herries (1850-1926) (stories)
- Son of a judge; educated at Eton and Cambridge; called to the Bar but turned to journalism instead; editor of Saturday Review 1883-84.
See also www.sf-encyclopedia.com/entry/pollock_walter_herries
- Porges, Arthur (1915-2006) (stories)
- Mathematics teacher and short story writer. Born in Chicago, Illinois.
See also www.sf-encyclopedia.com/entry/porges_arthur
- Post, Melville Davisson (1869-1930) (stories)
- See en.wikipedia.org/wiki/Melville_Davisson_Post
- Potter, [Rev.] Robert (1831-1908) (stories)
- Born in Ireland; educated at Trinity College, Dublin; ordained a deacon by the Bishop of Sydney in 1858 and a priest in 1859; served various Anglican parishes in Melbourne.
See also www.sf-encyclopedia.com/entry/potter_robert
- Pournelle, Jerry E(ugene) [Ph.D] (1933- ) (books) (stories)
- See www.sf-encyclopedia.com/entry/pournelle_jerry
- Powell, Talmage (1920-2000) (stories)
- Novelist and short story writer. Born in Hendersonville, North Carolina; lived in Asheville, North Carolina.
- Poyer, D(avid) C(harles) (1949- ) (stories)
- See www.sf-encyclopedia.com/entry/poyer_david_c