Rocky Hill
- Country: United States
- State: Connecticut
- Population: 19,920 (2016)
- Latitude: 41° 39.9' N (41.665°)
- Longitude: 72° 38.4' W (-72.64°)
- Elevation: 42 m/139 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)