Donal O'Brien
Donal O'Brien
may refer to:
Domnall Mór Ua Briain
(died 1194), king of Munster
Donal O'Brien (hurler)
(1940–2012), Irish hurler
Donald O'Brien (actor)
(1933), French-born Irish film and television actor
See also
Domnall Ua Briain (disambiguation)