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Last name Takaaki (高明 , Takaaki , タカアキ ) , in the world, is a common cognomen. The family name Takaaki is characteristic of Eastern Asia, particularly Japan, where it is quite a common surname, China, where it is a rare surname, and Hong Kong. In absolute terms, it most frequently occurs in Japan, China, and Indonesia. Also, Takaaki is the forename as well as the last name.