James Cahill

James Cahill may refer to:


 * James Cahill (art historian) (1926–2014), American art historian, authority on Chinese art
 * James F. Cahill (1926–2008), scuba diving pioneer
 * James Cahill (snooker player) (born 1995), English snooker player
 * James Cahill (author), British art critic, academic, and author
 * Jim Cahill (James Edward Cahill, 1903–1978), Australian politician