Justice Kavanagh or Kavanaugh may refer to:
Brett Kavanaugh (born 1965), associate justice of the Supreme Court of the United States Thomas G. Kavanagh (1917–1997), chief justice of the Michigan Supreme Court Thomas M. Kavanagh (1909–1975), chief justice of the Michigan Supreme Court
See also Megan Cavanagh (judge) (born 1971), chief justice of the Michigan Supreme Court Michael Cavanagh (judge) (1940–2025), chief justice of the Michigan Supreme Court