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Cognomen Petka (Петка
, Petka
, Петька
) , globally, is quite a rare surname. The last name Petka is characteristic of Eastern Europe, particularly Bulgaria, where it is quite a common surname, Poland, where it is a rare surname, and Slovakia. In absolute terms, it is commonest in Bulgaria, Poland, and the United States. Also, Petka is the forename as well as the last name.