Senator Horn may refer to:
- Chuck Horn (fl. 1980s-2000s), Ohio State Senate
- Fred Horn (1925–2018), Alabama State Senate
- Frederick W. Horn (1815–1893), Wisconsin State Senate
- John J. Horn (1917–1999), New Jersey State Senate
- Kenneth Horn (born 1959), Michigan State Senate
- Wally Horn (born 1933), Iowa State Senate