Daisuke Naito is a former professional boxer from Japan. He is the former WBC and lineal flyweight champion, and former Japanese and OPBF flyweight champion.

Pongsaklek Wonjongkam is a former Thai professional boxer and current boxing trainer. He is a two-time former lineal flyweight champion. During his first reign as world flyweight champion, which lasted between 2001 and 2007, Wonjongkam defended his title 17 times against 16 fighters, with both numbers being a flyweight record.