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Last name Sobiech (Sobiech , Собех ) , across the world, is quite a rare cognomen. The last name Sobiech is characteristic of Poland, where it is quite a rare surname, Germany, where it is a rare surname, and Ireland. Not in comparison with a country's population, it is commonest in Poland, Germany, and the United States. Also, Sobiech is the forename as well as the last name.