'''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 * Jim Duncan (Alaska politician) (born 1942), Alaska 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
==See also== * Senator Dungan (disambiguation)
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