Jack Barrett may refer to:

• Jack Barett (footballer (1874–1934), English footballer who played for Southampton
• Jack Barrett (footballer, born 2002), English footballer
• Jack Barrett (hurler) (1910–1979), Irish sportsman
• Jack Barrett (cricketer) (1866–1916), Australian cricketer
• Jack Barrett (politician), Irish politician
• Jack Barrett (rugby union) (born 2004), Australian rugby union player

• John Barrett (disambiguation)