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Surname Luch (Luch , Луч ) , all over the world, is quite a rare family name. The surname Luch is habitual in Guatemala, where it is quite a rare surname, Mauritius, and Kyrgyzstan, where it is a rare surname. Measured by absolute frequency, it is commonest in Guatemala, the United States, and Myanmar. Also, Luch is the forename as well as the last name.