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Last name Klapec (Klapec , Chlapec ) , worldwide, is a rare cognomen. The surname Klapec is habitual in Eastern Europe, particularly Czechia, where it is quite a rare surname, Slovakia, where it is a rare surname, and Poland. In absolute terms, it most frequently occurs in Czechia, Poland, and the United States. Likewise, Klapec is the forename as well as the last name.