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Globally, Achai (Achai , อาชัย , Ачай ) is a rare epicene forename. The first name Achai is habitual in Sudan, where it is a rare girly name, Indonesia, where it is a very rare male name, and Thailand. Not in comparison with a country's population, the name is most common in India, Indonesia, and Sudan. Very seldom, Achai is the last name as well as the forename.