Naoya Inoue (井上 尚弥, Inoue Naoya, born 10 April 1993) is a Japanese professional boxer. He is a three-weight world champion and currently a unified bantamweight world champion, having held the WBA (Super), IBF, and Ring magazine titles since 2019. He previously held the WBO junior-bantamweight title from 2014 to 2018, and the WBC light-flyweight title in 2014.
Nicknamed "Monster", Inoue is known for his devastating punching power and brutal body attack, having a knockout-to-win ratio of 84%. As of December 2019, he is ranked as the world’s best active bantamweight by BoxRec and the Transnational Boxing Rankings Board (TBRB). As well as being ranked as the world's second best active boxer, pound for pound, by the TBRB, third by The Ring and fourth ESPN.
Inoue won the Japanese Interscholastic Athletic Meeting and the Japanese Junior National Championships in 2009. In 2010, he took the bronze medal in the Asian Youth Championships in Tehran, Iran, and won the Japanese Junior Selection Tournament. He then participated in the AIBA Youth World Championships, but lost to Yosvany Veitía in the third preliminary round. He finished in the second place at the Japanese National Championships in the same year.