Ferrol (fārôlˈ) [key], city (1990 pop. 86,272), A Coruña prov., NW Spain, in Galicia. The naval base on the Atlantic was built in the 18th cent. and is one of the most important in Spain. Shipbuilding and ironworks are the main industries. Francisco Franco, El Caudillo, was born there, and from 1939 to the early 1980s it was known as El Ferrol del Caudillo.