Nehemiah R. Knight (1780–1854) was a U.S. Senator from Rhode Island from 1821 to 1841. Senator Knight may also refer to:
Benjamin Knight (politician) (1836–1905), California State Senate George A. Knight (1892–1963), Nebraska State Senate Horatio G. Knight (1818–1895), Massachusetts State Senate John Knight (judge) (1871–1955), New York State Senate John E. Knight (1925–1999), Nebraska State Senate Steve Knight (politician) (born 1966), California State Senate William J. Knight (1929–2004), California State Senate William M. Knight (1837–1910), Maryland State Senate
See also Senator McKnight (disambiguation)