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Family name Thorn (Thorn
, Торн
, 索恩) , in the world, is a widespread last name. The cognomen Thorn is habitual in South Korea, where it is a common surname, New Zealand, where it is quite a common surname, and Luxembourg. Measured by absolute frequency, it is the most numerous in South Korea, the United States, and the United Kingdom. Much less frequently, Thorn is the forename as well as the last name.