Sean O'Brien may refer to: Sportspeople Seán O'Brien (Gaelic footballer), Gaelic footballer for Nemo Rangers Seán O'Brien (Cork hurler) (1926–?), Irish hurler Seán O'Brien (Tipperary hurler), Irish hurler Sean O'Brien (ice hockey) (born 1972), American former ice hockey left winger Seán O'Brien (rugby union, born 1987), Irish rugby union international flanker for Leinster and London Irish Seán O'Brien (rugby union, born 1994), Irish rugby union flanker for Connacht Seán O'Brien (rugby union, born 1998), Irish rugby union centre for Connacht Seán O'Brien (rugby union, born 2000), American-born Irish rugby union flanker for Leinster Sean O'Brien (windsurfer) (born 1984), Australian windsurfer Sean O'Brien (footballer), English footballer Other people Sean O'Brien (writer) (born 1952), British writer Sean C. O'Brien, co-discoverer of buckminsterfullerene Sean O'Brien (labor leader), US trade unionist Sean O'Brien (musician), bassist and original member of Boston rock band Come Sean O'Brien (Ohio politician) (born 1969), Democratic member of the Ohio Senate See also John O'Brien (disambiguation) Sean O'Bryan (born 1963), American actor Shaun O'Brien (born 1969), Australian cyclist