Kevin O'Brien may refer to:
Sportsmen Kevin O'Brien (American football) (born 1970), American football player Kevin O'Brien (Australian footballer) (1932–2020), Australian rules footballer Kevin O'Brien (cricketer) (born 1984), Irish cricketer Kevin O'Brien (Dublin Gaelic footballer) (born 1991), Gaelic footballer for Dublin Kevin O'Brien (rugby league) (born 1932), Australian rugby league footballer Kevin O'Brien (rugby union) (born 1955), 1980s Ireland rugby union international Kevin O'Brien (rugby union coach), Welsh rugby union coach Kevin O'Brien (Wicklow Gaelic footballer), Irish Gaelic footballer
Politicians Kevin O'Brien (Newfoundland and Labrador politician) (born 1956), Newfoundland and Labrador MHA Kevin O'Brien (Nunavut politician) (born 1956), Nunavut and Northwest Territories MLA
Others Kevin F. O'Brien, American Jesuit and educational leader Kevin O'Brien (architect) (born 1972), architect in Queensland Kevin O'Brien (author), railroad inspector and novelist Kevin O'Brien (director), American director and storyboard artist