Amelia Island Light, Historic lighthouse in Fernandina Beach, Florida, US

Amelia Island Light is a white brick tower located at the northeastern tip of Amelia Island, Florida, rising about 64 feet (about 20 meters) above the ground. Its rotating beam sends navigational signals across the water, guiding vessels safely through the coastal passages nearby.

The lighthouse was built in 1838 and 1839 using salvaged bricks and materials from an older structure on Cumberland Island, just across the Georgia border. This makes it the oldest surviving lighthouse tower in Florida.

The City of Fernandina Beach has owned the lighthouse since 2001, when the United States Coast Guard transferred it; the Coast Guard still runs the beacon. The city limits access and offers tours twice a month. The next-to-last civilian keeper, Thomas J. O'Hagan, was the son of keeper Thomas P. O'Hagan and married a descendant of first keeper Amos Latham.

The City of Fernandina Beach, which has owned the lighthouse since 2001, limits access to the site. As of 2015 the grounds open only on Saturdays, for three hours, and the tower itself is not open to the public; the city also runs tours twice a month. The lighthouse structure serves as a private residence, so visits are confined to the grounds.

Inside the tower, a third-order Fresnel lens projects the beam far out over the water, and a separate red sector of that same light marks the shallow areas where ships should not go. This means the color of the light itself tells sailors whether they are in safe water or not.