Jack Forrest may refer to:
- Jack Forrest (footballer, born 1878) (1878–?), Scottish footballer
- Jack Forrest (footballer, born 1892) (1892–?), English footballer
- Jack Forrest (judge), Australian judge
- Jack Forrest (rugby league) (1924–2016), New Zealand rugby league player
- John F. Forrest (1927–1997), nicknamed Jack, American soldier