Brian or Bryan O'Sullivan may refer to: Brian O'Sullivan (Waterford hurler) (born 1990), Irish hurler for Waterford and for Ballygunner Brian O'Sullivan (Cork hurler) (born 2002), Irish hurler for Cork and for Kanturk Bryan O'Sullivan (born 1988), Limerick hurler Brian O'Sullivan (Gaelic footballer), see Noel O'Leary Brian O'Sullivan (swimmer), participated in Swimming at the 2011 European Youth Summer Olympic Festival Bryan O'Sullivan, technical writer, programmer; leading author of the Real World Haskell book
See also Brian Sullivan (disambiguation)