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Family name Londin (Londin , Лондин ) , across the world, is a rare last name. The last name Londin is characteristic of Czechia, where it is a rare surname, Russia, where it is a very rare surname, and Argentina. Measured by absolute frequency, it is commonest in Czechia, the United States, and Russia. Much less frequently, Londin is the forename as well as the last name.