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Surname Rooi (Arroyo , Rooi ) , in the world, is a widespread cognomen. The cognomen Rooi is characteristic of Latin America and the Caribbean, particularly Costa Rica, where it is a common surname, Puerto Rico, and Mexico, where it is quite a common surname (explore the name in all countries). In absolute terms, this name is the most popular in Mexico, Peru, and the United States. Very seldom, Rooi is the forename as well as the last name.