Philip Michael Ondaatje (born September 12, 1943) is a Sri Lankan-born Canadian poet, fiction writer, and essayist. He is renowned for his significant contributions to both poetry and prose.

Ondaatje's literary career began in 1967 with his poetry collection The Dainty Monsters, followed by the celebrated The Collected Works of Billy the Kid in 1970. His novel The English Patient (1992), adapted into a film in 1996, won the 1992 Golden Man Booker Prize.

He has been influential in "fostering new Canadian writing" through his two-decade commitment to Coach House Press (circa 1970–1990) and his editorial roles, including the journal Brick and the Long Poem Anthology (1979).