Jack Duncan may refer to:
- Jack Duncan (rugby union) (1900–1969), Australian rugby union player
- John Riley Duncan (1850–1911), known as Jack, Texas lawman
- Jack Duncan (soccer) (born 1993), Australian football (soccer) goalkeeper
See also
- Jack Duncan-Hughes (1882–1962), Australian politician
- Walter Jack Duncan (1881–1941), American war artist
- John Duncan (disambiguation)
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: