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Last name อีสาน (Isan , Isaan , Isarn ) , across the world, is quite a rare surname. The surname อีสาน is characteristic of North Macedonia, where it is quite a rare surname, Romania, where it is a rare surname, and Malaysia. In absolute terms, it is the most numerous in Indonesia, India, and Malaysia. More frequently, อีสาน is the forename as well as the last name.