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Surname וילצ'ק (Wilczek , וילצ'ק , Wilchek ) , all around the world, is quite a common family name. The last name וילצ'ק is habitual in Poland, where it is quite a common surname, Malta, where it is quite a rare surname, and Germany. In absolute terms, the name is most common in Poland, Germany, and the United States. Also, וילצ'ק is the forename as well as the last name.