Little Narragansett Bay is an inlet of the Atlantic Ocean and an estuary of the Pawcatuck River on the Rhode Island–Connecticut state line. It is sheltered by the curving peninsula of Napatree Point.
At the base of Napatree Point is the resort village of Watch Hill, Rhode Island. The bay also contains the islands of Sandy Point, Elihu Island, and Barn Island. Sandy Point was once part of Napatree Point until the two were separated by the Hurricane of 1938. Since that time, it has migrated north and west, and changed orientation. It now begins about 1/4 mile east of Stonington Borough, and runs approximately 1+1⁄2 miles east-southeast.