Jack Callahan may refer to:
- Jack Callahan (cartoonist) (1888–1954)
- Jack Callahan (Neighbours), fictional character on the Australian soap opera Neighbours
- Jack Callahan (coach), head coach of Old Dominion Monarchs baseball and basketball (1947–1948)
- Jack Callahan (musician)
See also
edit- Jack O'Callahan, retired American hockey player
- John Callahan (disambiguation)