Jack O'Neill 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 John O'Neill (disambiguation)