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Across the world, Rubun (Rubun ) is a rare unisex first name. The first name Rubun is habitual in Hong Kong, where it is a rare boy's name, the Democratic Republic of the Congo, and Indonesia, where it is a very rare boy's name. Not in comparison with a country's population, it is commonest in the Democratic Republic of the Congo, India, and Indonesia. Very seldom, Rubun is the last name as well as the forename.