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Cognomen Huỳnh (Huỳnh , Huynh , 黄 ) , all around the world, is a prevalent family name. The cognomen Huỳnh is habitual in China, where it is a prevalent surname, Vietnam, where it is a common surname, and Australia, where it is quite a common surname (explore the name in all countries). Not in comparison with a country's population, the name is most common in China, Vietnam, and the United States.