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Surname Passon (Passon , Пассон , ปัสตัน ) , around the world, is quite a rare last name. The cognomen Passon is habitual in Seychelles, where it is quite a common surname, Germany, where it is quite a rare surname, and Netherlands. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Poland. Much less frequently, Passon is the forename as well as the last name.