Justice Spencer may refer to:
Harry A. Spencer (1903–2007), associate justice of the Nebraska Supreme Court James Spencer (South Dakota judge) (c. 1844–1901), associate justice of the South Dakota Supreme Court John W. Spencer (1864–1939), associate justice of the Supreme Court of Indiana Martin Spencer (born 1956), judge of the British High Court William B. Spencer (1835–1882), associate justice of the Louisiana Supreme Court
See also Judge Spencer (disambiguation)