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Surname Rajchman (Rajchman , רחמן ) , in the world, is a rare family name. The last name Rajchman is characteristic of Israel, where it is quite a rare surname, Uruguay, and Czechia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Israel, Poland, and Czechia. Much less frequently, Rajchman is the forename as well as the last name.