Hiroto Kyoguchi (京口 紘人, Kyōguchi Hiroto, born November 27, 1993) is a Japanese professional boxer. He is a two-weight world champion, having held the IBF mini-flyweight title from 2017 to 2018, and the WBA (Super) and The Ring light-flyweight titles from 2018 to 2022. As of October 2022, he is ranked as the world's best active light flyweight by ESPN, second by the Transnational Boxing Rankings Board and third by BoxRec.