The Navesink Twin Lights is a non-operational lighthouse and museum located in Highlands, Monmouth County, New Jersey, United States, overlooking Sandy Hook Bay, the entrance to New York Harbor, and the Atlantic Ocean.

The Twin Lights, as the name implies, are a pair of beacons located 246 feet (75 m) above sea level on the headlands of the Navesink Highlands.

[5] The Twin Lights State Historic Site is part of the New Jersey Coastal Heritage Trail Route.

A lighthouse existed on the site since 1828, when it became an important guide and landmark for ships navigating the treacherous entrances to New York Harbor.

The non-identical towers by day and the two beacons by night—one flashing and one fixed—allowed ready identification by mariners of the identity of the facility, thus allowing a rough determination of their location approaching the harbor.