Rhode Island Sound
General data
- Name: Rhode Island Sound
- Water system: Atlantic Ocean
- Water type: Bay
- Progression: Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Rhode Island Sound is a marine sound off the coast of the U.S. state of Rhode Island at the mouth of Narragansett Bay. It forms the eastern extension of Block Island Sound and opens out the Atlantic Ocean between Block Island and Marthas Vineyard.