John Venn (1834–1923) was an English logician and mathematician.
John Venn may also refer to:
John Venn (academic) (died 1687), English academic administrator John Venn (politician) (1586–1650), English politician John Venn (priest) (1759–1813), one of the founders of the Church Missionary Society, son of Henry Venn John Archibald Venn (1883–1958), British economist