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Surname Castel (Castel
, קסטל
, Кастель
) , in the world, is a common last name. The last name Castel is habitual in Reunion, where it is quite a common surname, Mauritius, and France. Measured by absolute frequency, it most frequently occurs in France, Philippines, and Argentina. Much less frequently, Castel is the forename as well as the last name.