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Cognomen Ichikawa (イチカワ , Ichikawa ) , in the entire world, is quite a rare surname. The last name Ichikawa is habitual in Paraguay, where it is quite a rare surname, Japan, where it is a rare surname, and Taiwan. Not in comparison with a country's population, this name is the most popular in Japan, the United States, and Brazil. More prevalently, Ichikawa is the forename as well as the last name.