Justice Johston may refer to:
Alexander Johnston (1775–1849), British colonial official who served as third Chief Justice of Ceylon Francis Wayland Johnston (1882–1960), associate justice of the New Hampshire Supreme Court William Agnew Johnston (1848–1937), associate justice of the Kansas Supreme Court
See also Douglas I. Johnstone (born 1941), justice of the Supreme Court of Alabama Martin E. Johnstone (born 1949), associate justice of the Kentucky Supreme Court Justice Johnson (disambiguation)