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Surname Raba (Raba , Раба , 拉巴 ) , in the world, is a common last name. The surname Raba is characteristic of Estonia, where it is quite a common surname, Hungary, where it is quite a rare surname, and Czechia. Not in comparison with a country's population, the name is most common in India, Indonesia, and Colombia. Also, Raba is the forename as well as the last name.