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Surname Yaga (Yaga , Yakka , Яга ) , in all the world, is quite a common last name. The cognomen Yaga is characteristic of Papua New Guinea, where it is quite a rare surname, Cameroon, and Libya. Not in comparison with a country's population, it most frequently occurs in India, Nigeria, and Cameroon. Also, Yaga is the forename as well as the last name.