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Surname Passo (Pass , Passi , Passo ) , all over the world, is a common cognomen. The surname Passo is habitual in the Democratic Republic of the Congo, where it is quite a common surname, Estonia, and Cameroon, where it is quite a rare surname. In absolute terms, the name is most common in the Democratic Republic of the Congo, India, and the United States. Much less frequently, Passo is the forename as well as the last name.