>
Family name 伊藤 (Ito , Koji , Masahiro ) , all around the world, is a common surname. The cognomen 伊藤 is characteristic of Japan, where it is quite a common surname, Singapore, where it is quite a rare surname, and Peru. Not in comparison with a country's population, it most frequently occurs in Japan, Brazil, and China. Likewise, 伊藤 is the forename as well as the last name.