John Connelly may refer to:John Connelly (baseball), American college baseball coach John Connelly, English footballer John Connelly (1938–2012), English footballer John Connelly (historian), American historian John Connelly (musician), front man and guitarist with band Nuclear Assault John Connelly (prospector) (1860–1928), Australian prospector and mine owner John E. Connelly (1925–2009), Pittsburgh casino and riverboat owner John R. Connelly (1870–1940), U.S. Representative from Kansas