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- Sophia Parnok (1885–1933), Russian poet
- Pier Paolo Pasolini (1922–1975), Italian author and filmmaker
- Benito Pastoriza Iyodo (b. 1954), Puerto Rican poet, narrator and essayist who wrote Cartas a la sombra de tu piel (2002)
- Walter Pater (1839–1894), British author
- Fiona Patton (b. 1962), Canadian author
- Robert Patrick (b. 1937), American playwright
- Sandro Penna (1906–1977), Italian poet
- Darcy Penteado (1926–1987), Brazilian author
- Cristina Peri Rossi (b. 1941), Uruguayan author, lives in Spain
- Néstor Perlongher (1949–1992), Argentine author
- Fernando Pessoa (1888–1935), Portuguese author
- Petronius (ca 27-66), Roman author, wrote The Satyricon
- Steven Petrow (b. 1957), American author, wrote The Essential Book of Gay Manners & Etiquette (1995)
- Katherine Philips (1632–1664), English poet
- János Pilinszky (1921–1981), Hungarian poet
- Virgilio Piñera (1912–1979), Cuban author, wrote Rene's Flesh
- Alejandra Pizarnik (1936–1972), Argentine poet
- August von Platen (1796–1835), Bavarian poet
- Plato (427-327 B.C.), Greek philosopher
- William Plomer (1903–1973), South African writer
- Plutarch (ca 46-ca 120), Greek author
- Sydney Pokorny (1965–2008), American author, cowrote So You Want to be a Lesbian? (1995)
- Sarah Ponsonby (1755–1831), Anglo-Irish writer
- Adam Donaldson Powell (b. 1954), Norwegian author, co-wrote Gaytude: A Poetic Journey Around the World (2009 National Indie Excellence Award winner in category Gay/Lesbian non-fiction, http://www.indieexcellence.com/indie-results-2009.php; Xlibris Corporation, ISBN 978-1-4363-6396-9, ISBN 978-1-4363-6395-2, USA)
- John Preston (1945–1994), American author of gay erotica
- Marcel Proust (1871–1922), French author, wrote A la recheche du temps perdu (In Search of Lost Time)
- Manuel Puig (1932–1990), Argentine author, wrote Kiss of the Spider Woman (1976)
Read more about this topic: List Of LGBT Writers