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Cognomen Chantra (จันทรา , Chantra , จันตรา ) , in the world, is quite a common surname. The cognomen Chantra is habitual in South-eastern Asia, particularly Thailand, where it is quite a common surname, Cambodia, where it is a rare surname, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Thailand, the United States, and Malaysia. More prevalently, Chantra is the forename as well as the last name.