- Spring Grove
- Squantum
- Star Island
- Starve Goat Island (historical)
- Stillwater
- Sunshine Island (historical)
- Sagebed Island
- Sauks Island
- Sauks Island
- Scarborough Hills
- Seaweed Beach
- Sedge Beds Island
- Shady Harbor
- Shady Lea
- Shelter Harbor
- Shore Acres
- Skippers Island
- Snug Harbor
- South Ferry
- South Hopkinton
- South Kingstown
- Stevens Island
- Stillmanville
- Saunderstown
- Shannock
- Slatersville
- Slocum
- Smithfield