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Cognomen Sulek (Sulek , Sułek , Шулек ) , in all the world, is quite a rare last name. The surname Sulek is characteristic of Eastern Europe, particularly Slovakia, where it is quite a common surname, Poland, where it is quite a rare surname, and Czechia. Measured by absolute frequency, this name is the most popular in Poland, Slovakia, and the United States. Also, Sulek is the forename as well as the last name.