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Cognomen Шаак (Schaack , Шаак ) , in the entire world, is quite a rare surname. The last name Шаак is characteristic of Western Europe, particularly Luxembourg, where it is quite a common surname, Germany, where it is a rare surname, and France. In absolute terms, it is the most numerous in Germany, the United States, and Luxembourg. Much less frequently, Шаак is the forename as well as the last name.