Cardona Island Light is the only 6th order lighthouse in Puerto Rico with a cylindrical attached tower. The light is located on Cardona Island, a small island on the west side of the entrance to the harbor of Ponce, Puerto Rico. It was listed in the U.S. National Register of Historic Places on 22 October 1981.

Isla Cardona, also known as Sor Isolina Ferré Island, is a small, uninhabited island located 1.30 nautical miles south of the mainland Puerto Rican shore across from Barrio Playa, on the west side of the entrance to the harbor of Ponce, Puerto Rico. The small island is considered part of barrio Playa. It is home to the 1889 Cardona Island Light, which is listed in the U.S. National Register of Historic Places. Together with Caja de Muertos, Gatas, Morrillito, Ratones, Isla del Frio, and Isla de Jueyes, Cardona is one of seven islands ascribed to the municipality of Ponce. The island gained notoriety in 2010 when the Puerto Rican Bird Society made it a target for the eradication of the black rat.