Senator Simpson may refer to:
Members of the United States Senate Alan Simpson (American politician) (born 1931), U.S. Senator from Wyoming from 1979 to 1997 Milward Simpson (1897–1993), U.S. Senator from Wyoming from 1962 to 1967
United States state senate members Alexander Simpson (politician) (1872–1953), New Jersey State Senate Cleave Simpson (born 1960/61), Colorado State Senate Daniel R. Simpson (1927–2015), North Carolina State Senate Deborah Simpson (fl. 2000s–2010s), Maine State Senate Edward B. Simpson (1835–1915), Wisconsin State Senate F. Gary Simpson (fl. 1990s–2010s), Delaware State Senate Frank Simpson (politician) (born 1945), Oklahoma State Senate George W. Simpson (1870–1951), New York State Senate Harold D. Simpson (1926–2001), Nebraska State Senate John Simpson (Kansas politician) (born 1934), Kansas State Senate Joseph W. Simpson (1870–1944), Maine State Senate Leslie A. Simpson (1868–1926), North Dakota State Senate Philemon Simpson (1819–1895), Wisconsin State Senate Richard F. Simpson (1798–1882), South Carolina State Senate Vi Simpson (born 1946), Indiana State Senate William T. Simpson (1886–1980), New York State Senate Wilton Simpson (born 1966), Florida State Senate