Jack Gallagher may refer to: Jack Gallagher (comedian) (born 1953), American comedian, actor and writer Jack Gallagher (composer) (born 1947), American composer and college professor Jack Gallagher (oilman) (1916-1998), Canadian oil and gas executive Jack Gallagher (wrestler) (born 1990), British professional wrestler Jack Gallagher, character in And Millions Will Die John Andrew Gallagher, also called Jack