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Last name Loesch (洛希 , Loesch , Lösch ) , all over the world, is a common surname. The cognomen Loesch is habitual in Western Europe, particularly Luxembourg, where it is quite a common surname, Germany, where it is quite a rare surname, and Austria. Not in comparison with a country's population, it most frequently occurs in Germany, the United States, and Brazil. Very seldom, Loesch is the forename as well as the last name.