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Cognomen Choa (Choa , 초아 ) , all around the world, is quite a rare family name. The last name Choa is habitual in South-eastern Asia, particularly Singapore, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Philippines. Measured by absolute frequency, the name is most common in Philippines, Bangladesh, and Indonesia. Very seldom, Choa is the forename as well as the last name.