John Conlan
John Conlan may refer to:
- Jocko Conlan, Hall of Fame baseball umpire
- John Bertrand Conlan, U.S. Representative from Arizona; son of Jocko Conlan
- John Conlan (Kildare politician), Irish Farmers' Party politician, represented Kildare in the 1920s
- John Conlan (Monaghan politician), Irish Fine Gael politician