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Family name Ikawa (イカワ , Ikawa , 井川 ) , throughout the world, is quite a rare cognomen. The surname Ikawa is habitual in Qatar, where it is a rare surname, the Democratic Republic of the Congo, and Japan. In absolute terms, it most frequently occurs in the Democratic Republic of the Congo, Brazil, and China. More prevalently, Ikawa is the forename as well as the last name.