Jack O'Neill Jonathan J. "Jack" O'Neill is a fictional character in the MGM's military science fiction franchise ''Stargate'', primarily as one of the main characters of the television series ''Stargate SG-1''. Richard Dean Anderson played O'Neill in all th ...

is a fictional character in the ''Stargate'' film and television series . Jack O'Neill or O'Neil may also refer to: * Jack O'Neill (baseball) (1873–1935), Irish-American baseball player * Jack O'Neill (businessman) (1923–2017), American surfer and businessman, founder of O'Neill, the surfwear and equipment brand * Jack O'Neill (statistician) (1910–1998), Australian public servant * Jack O'Neil (swimmer) (born 2003), American Paralympic swimmer *Jack O'Neill, American rock musician, member of Jackopierce

See also