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In the entire world, 옥주 (옥주 , Okju , Ok-Ju ) is quite a rare unisex first name. The first name 옥주 is characteristic of South Korea, where it is quite a rare unisex name, and the United States, where it is an extremely rare dominantly feminine, but uncommonly boy's name. Much less frequently, 옥주 is the last name as well as the forename.