John Connelly

John Connelly may refer to:
 * John Connelly (baseball) (died 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