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Surname Serna (Serna , سيرنا , סרנה ) , around the globe, is a widespread last name. The surname Serna is habitual in Latin America and the Caribbean, particularly Colombia, where it is a common surname, Mexico, where it is quite a common surname, and Aruba (explore the name in all countries). In absolute terms, it is commonest in Colombia, Mexico, and the United States. Very seldom, Serna is the forename as well as the last name.