Senator Haynes may refer to:
- Joe M. Haynes (1936–2018), Tennessee State Senate
- Landon Carter Haynes (1816–1875), Confederate States Senator from Tennessee from 1862 to 1865
- Ray Haynes (born 1954), California State Senate
- Elizabeth Pugsley Hayward (1854–1942), Utah State Senate
- Elizabeth Steiner Hayward, Oregon State Senate
- Monroe Hayward (1840–1899), U.S. Senator from Nebraska in 1899
- William C. Hayward (1847–1917), Iowa State Senate