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Cognomen Ông (王 , Ông ) , around the world, is a prevalent family name. The cognomen Ông is habitual in China, where it is a prevalent surname, and Vietnam, where it is a rare surname.
Heng, Ong, Osng, Vang, Vương, Wang, Wong, Wáng, Ван, Ванг, Вонг, Онг, Хенг, ואנג, וונג, وانغ, وانگ, ウォン, ワン, 汪, 王氏, and 왕