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Surname Wada (ワダ , Wada , 和田 , among others...) , in the world, is a common cognomen. The cognomen Wada is characteristic of Nigeria, where it is quite a common surname, Libya, where it is quite a rare surname, and Tunisia. In absolute terms, it is the most numerous in Nigeria, Pakistan, and Japan. Likewise, Wada is the forename as well as the last name.