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Cognomen Клецки (Klecki , Клецки, Kletzki ) , around the world, is a rare last name. The cognomen Клецки is habitual in Poland, where it is a rare surname, Argentina, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, this name is the most popular in Poland, the United States, and Argentina. Likewise, Клецки is the forename as well as the last name.