John Saul is an American author.

John Saul may also refer to:

John Hennessy Saul (1819–1897), Irish-born American horticulturist and landscape architect John L. Saul (born 1948), British novelist and short story writer John Ralston Saul (born 1947), Canadian philosopher John S. Saul (John Shannon Saul) (1938-2023), Canadian political economist and activist John Saul (prostitute), male prostitute in the Cleveland Street scandal John Saul (actor) (1913–1979), Australian actor and director