Justice O'Brien may refer to:
- Charles H. O'Brien (1920–2007), associate justice of the Tennessee Supreme Court
- Denis O'Brien (politician) (1837–1909), judge of the New York Court of Appeals
- Henry X. O'Brien (1903/04–1990), associate justice of the Supreme Court of Pennsylvania
- John F. O'Brien (judge) (1874–1939), chief judge of the New York Court of Appeals
- Thomas D. O'Brien (1859–1935), associate justice of the Minnesota Supreme Court
If an internal link led you here, you may wish to change the link to point directly to the intended article. Categories: