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Cognomen Ривас (Rivas , Riwas , Ривас ) , in all the world, is a widespread last name. The surname Ривас is characteristic of Latin America and the Caribbean, particularly El Salvador, where it is a prevalent surname, Nicaragua, where it is a widespread surname, and Venezuela, where it is a common surname (explore the name in all countries). In absolute terms, it is commonest in Latin America and the Caribbean, particularly Mexico, Venezuela, and El Salvador. Very seldom, Ривас is the forename as well as the last name.