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Last name Rza (Rza , رزا , Рза ) , all over the world, is a common family name. The cognomen Rza is characteristic of Poland, where it is quite a common surname, Azerbaijan, and Armenia, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Poland, Azerbaijan, and Egypt. Much less frequently, Rza is the forename as well as the last name.