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Last name Otton (Otton , Оттон , Όθων ) , throughout the world, is quite a rare family name. The cognomen Otton is characteristic of Poland, where it is quite a rare surname, Uruguay, and Albania, where it is a rare surname. Measured by absolute frequency, the name is most common in Poland, the United Kingdom, and the United States. Likewise, Otton is the forename as well as the last name.