Justice O'Brien may refer to:
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Charles H. O'Brien (1920–2007), associate justice of the Tennessee Supreme Court
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Denis O'Brien (politician)
Denis O'Brien (March 13, 1837 – May 18, 1909) was an American lawyer and politician.
Life
Denis O'Brien was born on a farm near Ogdensburg, New York on March 13, 1837. He was admitted to the bar in 1861, and commenced practice in Watertown. H ...
(1837–1909), judge of the New York Court of Appeals
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Henry X. O'Brien (1903/04–1990), associate justice of the Supreme Court of Pennsylvania
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John F. O'Brien (judge) (1874–1939), chief judge of the New York Court of Appeals
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Thomas D. O'Brien
Thomas Dillon O'Brien (February 14, 1859 – September 3, 1935) was an American lawyer, judge, and academic from Minnesota. He was one of the five co-founders of William Mitchell College of Law and a justice of the Minnesota Supreme Court.
Bio ...
(1859–1935), associate justice of the Minnesota Supreme Court
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