Roger Q. Mills (1832–1911) was a U.S. Senator from 1892 to 1899. Senator Mills may also refer to:
Edgar G. Mills (1860–?), Wisconsin State Senate Elijah H. Mills (1776–1829), Massachusetts Fred Mills (politician) (born 1955), Louisiana State Senate George D. Mills (1898–1948), Illinois State Senate Jack Mills (Nebraska politician) (1937–2019), Nebraska State Senate John Mills (Massachusetts politician) (1787–1861), Massachusetts State Senate Morris Mills (born 1929), Indiana State Senate Ogden L. Mills (1884–1937), New York State Senate Peter Mills (American politician) (born 1943), Maine Robby Mills (born 1967), Kentucky State Senate Roger H. Mills (1813–1881), Connecticut State Senate Simeon Mills (1810–1895), Wisconsin State Senate Thomas Brooks Mills (1857–1930), Wisconsin State Senate William J. Mills (1849–1915), Connecticut State Senate