Beavertail State Park is a public recreation area encompassing 153 acres (62 ha) at the southern end of Conanicut Island in Narragansett Bay, Rhode Island. The state park's main attraction is the active Beavertail Lighthouse, the current tower of which dates from 1856. During World War II, the park area was part of Fort Burnside, one of several coastal fortifications designed to protect Narragansett Bay. The park's scenic shoreline offers hiking, picnicking, and saltwater fishing.

Beavertail Lighthouse was built in 1856 and is the premier lighthouse in Rhode Island, marking the entrance to Narragansett Bay. The 64-foot (20 m) lighthouse lies on the southernmost point of Conanicut Island in the town of Jamestown, Rhode Island in Beavertail State Park, on a site where beacons have stood since the early 18th century. The light provides navigation for boats and ships entering Narragansett Bay in the East Passage between Conanicut Island and Newport, Rhode Island on Aquidneck Island. Other lighthouses are visible from Beavertail Lighthouse, such as Castle Hill Lighthouse, Point Judith Light, and Rose Island Light.