Hornell
- Country: United States
- State: New York
- Population: 8,264 (2016)
- Latitude: 42° 19.7' N (42.32785°)
- Longitude: 77° 39.7' W (-77.6611°)
- Elevation: 354 m/1,162 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: Hornellsville