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Surname Hrach (Грач , Hrach , Храч ) , in the world, is quite a common last name. The cognomen Hrach is habitual in Armenia, where it is quite a common surname, Czechia, where it is quite a rare surname, and Austria. Not in comparison with a country's population, the name is most common in Armenia, Russia, and Ukraine. Also, Hrach is the forename as well as the last name.