Paul Edward Theroux (born April 10, 1941) is an American novelist and travel writer. He was awarded the 1981 James Tait Black Memorial Prize for his novel The Mosquito Coast, which was adapted for the 1986 movie of the same name and the 2021 television series of the same name.

He is the father of English-American authors and documentary filmmakers Marcel and Louis Theroux, the brother of authors Alexander Theroux and Peter Theroux, and uncle of the American actor and screenwriter Justin Theroux.