The Osaka Mayor's Cup is a junior tennis tournament, annually held in Osaka, Japan at the Utsubo Tennis Center. It was first held in 1993. Immediately after its inauguration, it was rated as "Grade A". The tournament is governed by International Tennis Federation (ATF) that looks after various forms of tennis including beach tennis, wheelchair tennis, and world tennis. The Osaka Mayor's Cup is the only tournament of its kind in the entirety of Asia. It comprises of singles and doubles events for both boys and girls. The events of the Osaka Mayor's Cup are as follows:
- Boys Singles: Inaugurated in the year 1993, it was won by Marcelo Andres Ríos Mayorga from Chile.
- Boys Doubles: Inaugurated in the year 2002, it was won by Brendan Evans and Chris Kwon from U.S.A.
- Girls Singles: Inaugurated in the year 1993, it was won by Hiroko Mochizuki.
- Girls Doubles: Inaugurated in the year 2002 and was won by Kristína Czafiková and Emma Laine of Slovakia and Finland, respectively