Napeague State Park is a 1364acre state park in the town of East Hampton in Suffolk County, New York. The largely undeveloped park stretches across the entire narrow width of the South Fork of Long Island from the Atlantic Ocean to Gardiners Bay and Block Island Sound. The park is located on either side of the Montauk Highway (New York Route 27) on the "Napeague Stretch" between Amagansett and Montauk. The hamlet of Napeague is located on the park's edge.