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Family name Nuon (نون , นวน , Nuon ) , all around the world, is a common cognomen. The cognomen Nuon is characteristic of Sudan, where it is quite a common surname, Lebanon, where it is quite a rare surname, and Saudi Arabia. Not in comparison with a country's population, it is commonest in Sudan, Saudi Arabia, and Egypt. Also, Nuon is the forename as well as the last name.