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Family name 京子 (Kyoko , 京子 , Kyōko) , around the world, is quite a rare surname. The last name 京子 is habitual in Japan, where it is a rare surname, Singapore, and Indonesia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Japan, China, and Indonesia. More prevalently, 京子 is the forename as well as the last name.