Peter Stiff was a London-born South African best-selling author of both fiction and non fiction.

Peter Francis Straub was an American novelist and poet. He wrote numerous horror and supernatural fiction novels, including Julia and Ghost Story, as well as The Talisman, which he co-wrote with Stephen King. Straub received such literary honors as the Bram Stoker Award, World Fantasy Award, and International Horror Guild Award.

Peter Berngardovich Struve was a Russian political economist, philosopher, historian and editor. He started his career as a Marxist, later became a liberal and after the Bolshevik Revolution joined the White movement. From 1920, he lived in exile in Paris, where he was a prominent critic of Russian Communism.

Peter Suchenwirt was an Austrian poet and herald.

Peter Sutermeister was a Swiss lawyer, writer and opera librettist.

Peter Swirski is a Canadian novelist, scholar, and literary critic featured in Canadian Who's Who. He is the author and editor of 19 nonfictions, including the prize-winning Ars Americana, Ars Politica (2010) and the staple of American popular culture studies From Lowbrow to Nobrow (2005). His other studies include American Utopia and Social Engineering (2011), American Political Fictions (2015), American Utopia: Literature, Society, and the Human Use of Human Beings, and the digital-futurological bestseller From Literature to Biterature (2013). He is also the leading authority on the late writer and philosopher Stanisław Lem.

Peter Szendy is a French philosopher and musicologist. He is the David Herlihy Professor of Humanities and Comparative Literature at Brown University.

Peter Guthrie Tait was a Scottish mathematical physicist and early pioneer in thermodynamics. He is best known for the mathematical physics textbook Treatise on Natural Philosophy, which he co-wrote with Lord Kelvin, and his early investigations into knot theory.

Peter Frederick Taylor-Gooby has been Professor of Social Policy at the University of Kent since 1990.

Peter Telep is an American author, screenwriter, and educator who has collaborated with the late Tom Clancy. He has written over 50 books, and written scripts for multiple television shows. He is currently a teacher at The University of Central Florida.