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Cognomen Tarou (タロウ , เผือก , Tarou ) , in the world, is a common last name. The last name Tarou is habitual in Japan, where it is quite a common surname, Taiwan, where it is a rare surname, and Greece. In absolute terms, it most frequently occurs in Japan, Taiwan, and Morocco. Very seldom, Tarou is the forename as well as the last name.