John Milligan

John Milligan is the name of:
 * John J. Milligan (1795–1875), American lawyer, judge and political figure
 * John Colborne Milligan (1867–1941), Ontario lawyer, judge and political figure
 * Jocko Milligan, born John Milligan (1861–1923), Major League Baseball player
 * John Milligan (baseball) (1904–1972), Major League Baseball player
 * John F. Milligan, CEO of Gilead Sciences
 * John Milligan-Whyte (born 1952), American businessman, lawyer and philosopher