Senator Leonard may refer to:
Arthur Gray Leonard (1870–?), Iowa State Senate Bill Leonard (politician) (born 1947), California State Senate George Leonard (congressman) (1729–1819), Massachusetts State Senate Jerris Leonard (1931–2006), Wisconsin State Senate Larry Leonard (1934–2002), Illinois State Senate Randy Leonard (born 1952), Oregon State Senate Timothy D. Leonard (1940–2026), Oklahoma State Senate
See also James B. Leonardo (1889–1962), Illinois State Senate