Old Northern Boulevard is a major, 2.4-mile (3.9 km) road in Nassau County, on Long Island, New York. It is a bypassed section of Northern Boulevard between Middle Neck Road in Flower Hill & The Locusts in Roslyn Estates, east through Roslyn, with NY 25A being the termini for both ends of the road.
Old Northern Boulevard in the heart of Roslyn, as seen from Main Street (CR 7A).