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Cognomen Avat (อนิวัตติ์ , Avat , Haut ) , throughout the world, is quite a rare last name. The surname Avat is characteristic of Western Europe, particularly Belgium, where it is quite a rare surname, Germany, and Switzerland. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and France. Very seldom, Avat is the forename as well as the last name.