Jack Allen
Jack Allen may refer to:
- Jack Allen (actor), British actor
- Jack Allen (footballer, born 1889), English footballer
- Jack Allen (footballer, born 1891), English football player for Glossop, Manchester City, Southport and Crewe Alexandra
- Jack Allen (footballer, born 1903), English football player
- Jack Allen (Australian footballer), Australian rules footballer
- Jack Allen (Northern Ireland politician), Unionist in Northern Ireland
- John F. Allen (physicist), physicist
- Jack Allen (Adventures in Odyssey), character in a Christian-themed comedy-drama
- Jack Allen (baseball), baseball player
- Jack Allen (American football), American football player
- Jack Allen (Canadian politician), reeve of East York in Toronto