John Horan

• John Horan (rugby league), rugby league footballer of the 1930s and 1940s
• John Horan (sports administrator), served as 39th president of the GAA between 2018 and 2021
• John Horan (politician), politician in the Legislative Assembly of Alberta
• John J. Horan, American businessman, CEO and chairman of Merck & Co.
• Johnny Horan, American basketball player