Justice Dean may refer to:
- Arthur Dean (judge) (1893âÂÂ1970), associate justice of the Supreme Court of Victoria
- Gilbert Dean (1819âÂÂ1870), justice of the New York Supreme Court, and ex officio a judge of the New York Court of Appeals
- James R. Dean (1862âÂÂ1936), associate justice of the Nebraska Supreme Court
- John Dean (Pennsylvania judge) (1835âÂÂ1905), justice of the Pennsylvania Supreme Court