Peter Abelard was a medieval French scholastic philosopher, leading logician, theologian, poet, composer and musician.

Peter Henry Abrahams Deras, commonly known as Peter Abrahams, was a South African-born novelist, journalist and political commentator who in 1956 settled in Jamaica, where he lived for the rest of his life. His death at the age of 97 is considered to have been murder.

Peter Ackroyd is an English biographer, novelist and critic with a specialist interest in the history and culture of London. For his novels about English history and culture and his biographies of, among others, William Blake, Charles Dickens, T. S. Eliot, Charlie Chaplin and Sir Thomas More, he won the Somerset Maugham Award and two Whitbread Awards. He is noted for the volume of work he has produced, the range of styles therein, his skill at assuming different voices, and the depth of his research.

Pyotr Markovich Aleshkovsky is a Russian writer, historian, broadcaster, television presenter, journalist and archaeologist.

Peter Alexandrovich Saburov was a Russian diplomat, collector of ancient Greek sculpture and antiquities, and an amateur chess player and patron of chess tournaments, as an honorary President of the St Petersburg Chess Club.

Peter Allison is an Australian writer whose books have focused on his time as an African safari guide, as well as his time in South America.

Peter Altenberg was a writer and poet from Vienna, Austria. He played a key role in the genesis of early modernism in the city.

Peter Andreas Heiberg was a Danish-Norwegian author and philologist. He was born in Vordingborg, Denmark-Norway. The Heiberg ancestry can be traced back to Norway, and has produced a long line of priests, headmasters and other learned men. His father was the Norwegian-born headteacher of the grammar school in Vordingborg, Ludvig Heiberg, whilst his mother was Inger Margrethe, daughter of the vicar at the manor of Vemmetofte Peder Heiberg, a relative of Ludvig Heiberg, and Inger Hørning, who came from a family of wealthy Danish merchants.

Peter Andreas Munch, usually known as P. A. Munch, was a Norwegian historian, known for his work on the medieval history of Norway. Munch's scholarship included Norwegian archaeology, geography, ethnography, linguistics, and jurisprudence. He was also noted for his Norse legendary saga translations.

Peter Anthony Motteux was a French-born English author, playwright, and translator. Motteux was a significant figure in the evolution of English journalism in his era, as the publisher and editor of The Gentleman's Journal, "the first English magazine," from 1692 to 1694.