Senator Marshall may refer to:
Members of the United States Senate Humphrey Marshall (politician) (1760–1841), U.S. Senator from Kentucky from 1795 to 1801 Roger Marshall (born 1960), U.S. Senator from Kansas since 2021
United States state senate members Alexander J. Marshall (1803–1882), Virginia State Senate Bob Marshall (Kansas politician) (born 1937, Kansas State Senate Elaine Marshall (born 1945), North Carolina State Senate Henry Marshall (New York politician) (1847–1938), New York State Senate Henry Marshall (Louisiana politician) (1805–1864), Louisiana State Senate James Keith Marshall (1817–1862), Virginia State Senate James William Marshall (politician) (1844–1911), Virginia State Senate L. L. Marshall (1888–1958), Ohio State Senate Leroy T. Marshall (1883–1950), Ohio State Senate N. Monroe Marshall (1854–1935), New York State Senate Oliver S. Marshall (1850–1934), West Virginia State Senate Robert I. Marshall (1946–2024), Delaware State Senate Thomas Marshall (Illinois politician) (1817–1873), Illinois State Senate Thomas Marshall (Maine politician) (1826–1861), Maine State Senate Thomas F. Marshall (North Dakota politician) (1854–1921), North Dakota State Senate