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Cognomen Ribas (Ribas , ريباس , 里巴斯 ) , globally, is a common last name. The family name Ribas is characteristic of Brazil, where it is quite a common surname, Andorra, and Portugal (explore the name in all countries). Not in comparison with a country's population, the name is most common in Brazil, Spain, and Angola. Much less frequently, Ribas is the forename as well as the last name.