Justice Arnold may refer to:
Dutee Arnold (1763–1849), associate justice of the Rhode Island Supreme Court James M. Arnold (1838–1897), associate justice and chief justice of the Supreme Court of Mississippi Josiah Arnold (judge) (fl. 1740s), associate justice of the Rhode Island Supreme Court Morris S. Arnold (born 1941), special chief justice of the Arkansas Supreme Court Peleg Arnold (1751–1820), chief justice of the Rhode Island Supreme Court Ralph L. Arnold (1887–1948), associate justice of the Montana Supreme Court Richard David Arnold (born 1961), formally Lord Justice Arnold, a Judge of the Court of Appeal of England and Wales. Thomas Arnold (judge) (1750–1826), associate justice of the Rhode Island Supreme Court W. H. "Dub" Arnold (1935–2023), associate justice of the Arkansas Supreme Court
See also Judge Arnold (disambiguation)