Senator McDowell may refer to:
Charles S. McDowell (1871–1943), Alabama State Senate Charles McDowell (North Carolina militiaman) (1743–1815), North Carolina State Senate Harris McDowell Sr. (1859–1927), Delaware State Senate Harris McDowell (1906–1988), Delaware State Senate Harris McDowell III (born 1940), Delaware State Senate John G. McDowell (1794–1866), New York State Senate Joseph J. McDowell (1800–1877), Ohio State Senate William John McDowell (1861–1929), Northern Irish Senate