Cognomen Серро (Cerro 
, Serreau 
, Serrault 
) , across the world, is a common last name. The last name Серро is characteristic of U.S. Virgin Islands, where it is quite a common surname, Uruguay, where it is quite a rare surname, and Spain. Not in comparison with a country's population, it is commonest in Spain, France, and Philippines. Much less frequently, Серро is the forename as well as the last name.