The Tower of Hercules (Galician: Torre de Hércules, Spanish: Torre de Hércules) is the oldest known extant lighthouse. Built in the 1st century, the tower is located on a peninsula about 2.4 km (1.5 mi) from the center of A Coruña, Galicia, in northwestern Spain. Until the 20th century, it was known as the Farum Brigantium. The Latin word farum is derived from the Greek Φάρος, Pharos, for the Lighthouse of Alexandria. The structure stands 55 metres (180 ft) tall and overlooks the North Atlantic coast of Spain. The tower was renovated in 1791.

There is a sculpture garden on the grounds of the lighthouse featuring works by Pablo Serrano and Francisco Leiro. The Tower of Hercules is a National Monument of Spain and has been a UNESCO World Heritage Site since 27 June 2009. It is the second-tallest lighthouse in Spain, after the Faro de Chipiona.