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In the entire world, トモコ (Tomoko , トモコ ) is quite a common girly given name. The first name トモコ is characteristic of Guam, where it is quite a common girly name, Japan, where it is quite a rare female name, and Hong Kong, where it is a rare female name. In absolute terms, it is commonest in Japan, the United States, and China. More frequently, トモコ is the last name as well as the forename.
トモコ is also a name for the fictitious and mythical characters: Tomoko Oishi , character in Ring.