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Surname 欧 (O , 欧 ) , throughout the world, is a prevalent family name. The cognomen 欧 is habitual in Venezuela, where it is a common surname, Vanuatu, where it is quite a common surname, and China (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in China, Indonesia, and Venezuela. Very seldom, 欧 is the forename as well as the last name.