Pat O'Brien

Pat O'Brien may refer to:

Politicians

Pat O'Brien (Irish politician) (c. 1847–1917), Irish Nationalist MP in the United Kingdom Parliament
Pat O'Brien (Canadian politician) (born 1948), member of the Canadian House of Commons

Benson Harrison "Pat" O'Brien (1894–1983) of Pat O'Brien's Bar, US cocktail maker
Pat O'Brien (actor) (1899–1983), American film actor
Maynard O'Brien (1907–1990, American football coach nicknamed Pat
Pat O'Brien (radio and television personality) (born 1948), American sports commentator and television host
Pat O'Brien (guitarist) (born 1965), American guitarist for Cannibal Corpse
Pat O'Brien (racing driver) (born 1965), Hall of Fame modified racing driver
Pat O'Brien (rugby union) (born 1989), South African rugby union player