Venn may mean:
- Blair Venn, Australian actor
- John Venn (disambiguation), several people
- Henry Venn (Clapham Sect) the elder, (1725–1797), English evangelical minister
- John Venn (1750-1813), one of the founders of the Church Missionary Society, son of Henry Venn
- Henry Venn (Church Missionary Society) the younger, (1796-1873), secretary of the Church Missionary Society, grandson of Henry Venn
- John Venn (1834–1923), British logician and the inventor of Venn diagrams, son of Henry Venn the younger
- Henry Venn (Church Missionary Society) the younger, (1796-1873), secretary of the Church Missionary Society, grandson of Henry Venn
- John Venn (1750-1813), one of the founders of the Church Missionary Society, son of Henry Venn
- Venn Young (1929–1993), New Zealand politician
- Venn diagram, used in logic
- Venn, Saskatchewan, a Canadian hamlet