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Cognomen Regil (Regil , Региль ) , globally, is quite a rare family name. The last name Regil is characteristic of Latin America and the Caribbean, particularly Guatemala, where it is quite a rare surname, Mexico, where it is a rare surname, and Honduras. Not in comparison with a country's population, the name is most common in Guatemala, Mexico, and Philippines. Likewise, Regil is the forename as well as the last name.