Old Bethpage is a hamlet located in Nassau County, on Long Island, New York. It's situated within the Town of Oyster Bay and is best known as the home of Old Bethpage Village Restoration, a living history museum that depicts 19th-century Long Island life. Beyond the museum, Old Bethpage offers a suburban residential environment with local parks and amenities. It's also home to Bethpage State Park, famous for its five golf courses, including the Black Course, which has hosted multiple U.S. Open championships.