Justice Smyth may refer to:
Constantine Joseph Smyth (1859–1924), chief justice of the Court of Appeals of the District of Columbia Frederick Smyth (New York politician) (1832–1900), judge of the New York Supreme Court George W. Smyth (Mississippi judge) (died 1832), justice of the Mississippi Supreme Court
See also Sidney Smythe (1705–1778), British judge and politician Justice Smith (disambiguation)