Brian O'Neill

Brian O'Neill may refer to:

Arts and entertainment

Brian D. O'Neill (born 1949), American author and attorney
Brian O'Neill (journalist) (c. 1900–1975), English and Irish journalist and author
Brian O'Neill, fictional Irish gangster in Mafia II

Brian O'Neill (ice hockey, born 1929) (1929–2023), Canadian executive in the National Hockey League
Brian O'Neill (ice hockey, born 1988), American ice hockey player
Brian O'Neill (American football) (born 1995), American football offensive tackle

Brian McPhelim O'Neill (died 1574), lord of Lower Clandeboye
Brian MacArt O'Neill (died 1607), member of the O'Neill Dynasty
Brian J. O'Neill (born 1949), American politician
Brian O'Neill (superintendent) (1941–2009), American superintendent of the Golden Gate National Recreation Area
Brian O'Neill (died 1260), High King of Ireland
Brian C. O'Neill (born 1965), American earth system scientist and demographer
Brian O'Neill, Baron Dungannon (died 1562), Irish aristocrat
Sir Brian O'Neill, 2nd Baronet (died 1694), Irish landowner, barrister and judge
Brian O'Neill (died 1617), seventeenth-century Irish noble