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Cognomen บุญญา (Bunya , บุญญา , Boonya ) , in all the world, is quite a rare surname. The cognomen บุญญา is habitual in Thailand, where it is quite a rare surname, Hungary, where it is a rare surname, and Uganda. Not in comparison with a country's population, it is the most numerous in Thailand, Uganda, and Nigeria. More frequently, บุญญา is the forename as well as the last name.