South Windsor
- Country: United States
- State: Connecticut
- Population: 25,793 (2016)
- Latitude: 41° 49.2' N (41.82°)
- Longitude: 72° 36.5' W (-72.609°)
- Elevation: 24 m/79 ft. above sea level
- Time zone: America/New_York (UTC -05:00); DST observed (UTC -04:00)