John Mahoney (disambiguation)

John Mahoney (1940–2018) was an English-American actor.

John Mahoney may also refer to:
 * John Mahoney (footballer) (born 1946), Welsh international footballer
 * John Christopher Mahoney (1882–1952), United States federal judge
 * John Francis Mahoney (1884–1929), Canadian lawyer and political figure
 * John Friend Mahoney (1889–1957), American physician
 * John J. Mahoney, member of the Massachusetts House of Representatives since 2011
 * John Mahoney (Ohio politician) (1949–2011), member of the Ohio Senate
 * John W. Mahoney (1926–2006), lawyer, judge and politician in Newfoundland, Canada
 * J. Daniel Mahoney (1931–1996), judge of the United States Court of Appeals
 * John Mahony (ethicist) (born 1931), Scottish Jesuit and moral theologian
 * John C. Mahoney (mayor) (1881–1946), American mayor