Senator Duncan

Senator Duncan may refer to:


 * Alexander Duncan (politician) (1788–1853), Ohio State Senate
 * J. Ebb Duncan (1909–1980), Georgia State Senate
 * James H. Duncan (1793–1869), Massachusetts State Senate
 * Joseph Duncan (politician) (1794–1844), Illinois State Senate
 * Robert L. Duncan (born 1953), Texas State Senate
 * Thomas Duncan (American politician) (1893–1959), Wisconsin State Senate
 * Verne Duncan (born 1934), Oregon State Senate
 * William C. Duncan (1820–1877), Michigan State Senate