Senator Knight may refer to:
- Horatio G. Knight (1818–1895), Massachusetts State Senate
- John Knight (judge) (1871–1955), New York State Senate
- Nehemiah R. Knight (1780–1854), U.S. Senator from Rhode Island from 1821 to 1841
- Steve Knight (politician) (born 1966), California State Senate
- William J. Knight (1929–2004), California State Senate