Kenshiro Teraji (寺地 拳四朗, Teraji Kenshirō, born 6 January 1992), also known as Ken Shiro (ケンシロウ, Ken Shirō), is a Japanese professional boxer. He is a two-time and unified light flyweight champion, having held the World Boxing Council (WBC) light flyweight title from 2017 to 2021, and the unified World Boxing Association (WBA) (Super version), WBC, and The Ring light flyweight titles since 2022. As of April 2024, Teraji is ranked as the world's eight best active boxer, pound for pound, by the Transnational Boxing Rankings Board, He is also ranked as the world's best active light flyweight by The Ring, TBRB, ESPN, and BoxRec.