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In the world, Quoc (Quoc , コク , Quôc ) is a common masculine first name. The first name Quoc is characteristic of Vietnam, where it is quite a common boy's name, France, where it is a rare boy's name, and Australia. Measured by absolute frequency, it is the most numerous in Vietnam, the United States, and France. Likewise, Quoc is the last name as well as the forename.