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In the world, Thananchai (ธนัญชัย , Thananchai , ทนันชัย ) is quite a rare principally male, but very infrequently female first name. The forename Thananchai is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare predominantly male, but very infrequently female name. Likewise, Thananchai is the last name as well as the forename.