John Leary

• John Leary , businessman, mayor of Seattle
• John Leary , 1910s baseball player
• John Leary , Australian cricketer
• Jack Leary, 1880s baseball player
• John J. Leary Jr., American journalist
• Scott Leary, American swimmer
• John P. Leary, Jesuit priest, president of Gonzaga University
• John Leary, Australian theatre and television actor, Kangaroo Creek Gang and others
• John S. Leary, American lawyer and politician
• John Frederic Leary, British librarian and antiquarian