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Last name Hà (Hà , 하 , Ха ) , all around the world, is a widespread cognomen. The cognomen Hà is habitual in South Korea, where it is a common surname, Vietnam, and Macao, where it is quite a common surname. Not in comparison with a country's population, it is commonest in Vietnam, South Korea, and Russia. Much less frequently, Hà is the forename as well as the last name.