Wilczek (Polish pronunciation: [ˈvilt͡ʂɛk]) is a surname of Polish-language origin. A diminutive form of Wilk, it means "little wolf" in Polish. It is used by 9,000–10,000 people in Poland, with the greatest number found in Silesia, Podhale, the Warsaw region, Lublin and Łańcut. The surname may refer to: