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Cognomen Deutch (Deutch , Дойч , דויטש ) , in all the world, is quite a rare surname. The last name Deutch is habitual in Israel, where it is quite a common surname, El Salvador, where it is a rare surname, and Cameroon. In absolute terms, the name is most common in Israel, the United States, and Algeria. Much less frequently, Deutch is the forename as well as the last name.