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Last name Boih (Boih ) , all over the world, is quite a common cognomen. The cognomen Boih is characteristic of Myanmar, where it is quite a common surname, Macao, where it is quite a rare surname, and Singapore, where it is a rare surname. In absolute terms, it is commonest in South-eastern Asia, particularly Myanmar, Malaysia, and Indonesia. Much less frequently, Boih is the forename as well as the last name.