Namesakes
Maureen O'Sullivan
(f) 1911-1998 
Notable Actors and Entertainers (actor)
Moya O'Sullivan
(f) 1926-2018
Notable Actors and Entertainers (actor)
Keala O'Sullivan
(f) 1950-
Olympic Medalists 1968 diving (bronze)
Sonia O'Sullivan
(f) 1969-
Olympic Medalists 2000 5000 m (silver)
Ronnie O'Sullivan
(m) 1975-
Notable Athletes (billiards)