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Surname Perala (Perala ) , across the world, is a common last name. The last name Perala is habitual in Finland, where it is quite a common surname, Estonia, where it is quite a rare surname, and India, where it is a rare surname. Measured by absolute frequency, this name is the most popular in India, Finland, and the United States. Much less frequently, Perala is the forename as well as the last name.