Pedro Calderón de la Barca was a Spanish dramatist, poet, writer and knight of the Order of Santiago. He is known as one of the most distinguished Baroque writers of the Spanish Golden Age, especially for his plays.

Perceval Gibbon was an author and journalist, serving for the Rand Daily Mail in South Africa, as well as for other publications. Gibbon had travelled to South Africa in 1898, moved to the war front and became the representative of a syndicate of colonial newspapers at the outbreak of the Anglo-Boer War. He is best remembered for his short stories, which often contained an ironic twist at the end. Gibbon's influence on the work of later South African authors has been acknowledged. For instance, the fictional narrator of Vrouw Grobelaar's Leading Cases (1905) is said to be a forerunner of Herman Charles Bosman's character Oom Schalk Lourens.

Percival Lowell was an American businessman, author, mathematician, and astronomer who fueled speculation that there were canals on Mars, and furthered theories of a ninth planet within the Solar System. He founded the Lowell Observatory in Flagstaff, Arizona, and formed the beginning of the effort that led to the discovery of Pluto 14 years after his death.

Joseph Percival Pollard was an American literary critic, novelist and short story writer.

Percival Wilde was an American author and playwright who wrote novels and numerous short stories and one-act plays. He also authored a textbook on the theater arts. Native to New York City, Wilde graduated from Columbia University in 1906, and worked for a time as a banker. He began writing plays in 1912, and joined The Lambs Club in 1947.

Percy Bysshe Shelley was one of the major English Romantic poets. A radical in his poetry as well as in his political and social views, Shelley did not achieve fame during his lifetime, but recognition of his achievements in poetry grew steadily following his death, and he became an important influence on subsequent generations of poets, including Robert Browning, Algernon Charles Swinburne, Thomas Hardy, and W. B. Yeats. American literary critic Harold Bloom describes him as "a superb craftsman, a lyric poet without rival, and surely one of the most advanced sceptical intellects ever to write a poem."

Percy Francis Westerman was an English author of children's literature, with a prolific output. Many of his books are adventure stories with military and naval themes.

Percy Greg, son of William Rathbone Greg, was an English writer.

Percy James Brebner was a British writer of adventure and detective fiction. He was the eldest son of James Brebner, manager of the National Provincial Bank of England, Piccadilly. He was educated at King's College School and worked in the Share & Loan Department of the Stock Exchange before he began his writing career. He published his early novels under the name Christian Lys. Brebner wrote several historical novels. One of his most popular creations was professor Christopher Quarles, a master detective of the Sherlock Holmes variety. His Lost World title The Fortress of Yadasara also known as The Knight of the Silver Star was described as "a highly romantic lost-race adventure in the mode of the contemporary historical novel.". It was serialized in Italian and Spanish pulp adventure journals in the early 20th century and was listed in 333: A Bibliography of the Science-Fantasy Novel a collection of the best efforts in Science-Fantasy up to and including 1950.

Percy Keese Fitzhugh was an American writer of nearly 100 books for children and young adults.