Japan at the 2019 World Aquatics Championships

Japan competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.

Artistic swimming
Japan entered 13 artistic swimmers.


 * Women


 * Mixed

Legend: (R) = Reserve Athlete

Diving
Japan entered seven divers.


 * Men


 * Women

Open water swimming
Japan qualified two male and two female open water swimmers.


 * Men


 * Women


 * Mixed

Swimming
Japan entered 25 swimmers.


 * Men


 * Women


 * Mixed

Legend: (*) = Swimmers who participated in the heat only.

Men's tournament

 * Team roster


 * Katsuyuki Tanamura
 * Seiya Adachi
 * Harukiirario Koppu
 * Mitsuaki Shiga
 * Takuma Yoshida
 * Atsuto Iida
 * Yusuke Shimizu
 * Mitsuru Takata
 * Atsushi Arai
 * Yusuke Inaba
 * Keigo Okawa (C)
 * Kenta Araki
 * Tomoyoshi Fukushima
 * Coach: Yoji Omoto


 * Group D


 * Playoffs


 * 9th–12th place semifinals


 * Eleventh place game

Women's tournament

 * Team roster


 * Rikako Miura
 * Yumi Arima
 * Akari Inaba
 * Shino Magariyama
 * Chiaki Sakanoue
 * Miku Koide
 * Maiko Hashida
 * Yuki Niizawa
 * Minori Yamamoto
 * Misaki Noro
 * Marina Tokumoto
 * Kotori Suzuki (C)
 * Minami Shioya
 * Coach: Makihiro Motomiya


 * Group D


 * 13th–16th place semifinals


 * 13th place game