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Cognomen 左 (左 , Tso , Hidari ) , globally, is a widespread family name. The last name 左 is characteristic of Cayman Islands, where it is quite a common surname, China, and Hong Kong (explore the name in all countries). Measured by absolute frequency, it is commonest in China, Hong Kong, and the United States. Much less frequently, 左 is the forename as well as the last name.