Namesakes
Fictional Characters from Movies:
1 character
Jack O'Neill 1994 Stargate 
Fictional Characters from Television:
2 characters
Jack O'Neill 1997 Stargate SG-1
Naoise O'Neill 1999 Family Law
Nobel Prize Winners:
1 literature
(literature) Eugene O'Neill 1936
Notable Actors and Entertainers:
4 actors
Maire O'Neill 1886-1952
Ed O'Neill 1946-
Jennifer O'Neill 1948-
Michael O'Neill 1951-
Notable Writers:
1 playwright
Eugene O'Neill 1888-1953
Olympic Medalists:
1 silver/bronze/gold
(silver/bronze/gold) Susie O'Neill 1992; 1996; 2000 swimming - 200 m butterfly; swimming - 4x100 m medley relay; swimming - 4x200 m freestyle relay; swimming - 200 m freestyle