John Connelly, English footballer (b. 1938)
John Connelly may refer to:

John Connelly (baseball) (?–2013), American college baseball coach

John Connelly (1910s footballer), English footballer

John Connelly (footballer, born 1938) (1938–2012), English footballer

John Connelly (historian), American historian

John Connelly (musician) (born 1962), 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