- Sixpenny Island
- Skinnerville
- Smith Corner
- Smith Island
- Smut Island (historical)
- Snug Harbor
- Sodom
- Somers
- Somersville
- Sound View
- South Britain
- South Brother
- South Canaan
- South Chaplin
- South Coventry
- South Ellsworth
- South End
- South End
- South Farms
- South Glastonbury
- South Kent
- South Killingly
- South Lyme
- South Meriden
- South Norfolk
- South Norwalk
- South Wethersfield
- South Willington
- South Wilton
- South Windham