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Last name Krystof (Krystof , Кристоф ) , all around the world, is a rare cognomen. The last name Krystof is habitual in Czechia, where it is quite a rare surname, Slovakia, where it is a rare surname, and Switzerland, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Czechia, the United States, and Germany. Likewise, Krystof is the forename as well as the last name.