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Last name Koziol (Koziol , Kozioł , Козьол ) , all over the world, is a common family name. The cognomen Koziol is characteristic of Poland, where it is quite a common surname, Germany, where it is quite a rare surname, and Slovakia. Not in comparison with a country's population, this name is the most popular in Poland, the United States, and Germany. Also, Koziol is the forename as well as the last name.