Japan competed at the 2023 World Aquatics Championships in Fukuoka, Japan from 14 to 30 July.
Medalists
| width=78% align=left valign=top | Medal Name Sport Event Date Yukiko Inui Artistic swimming Women's solo technical routine Tomoka SatoYotaro Sato Artistic swimming Mixed duet technical routine Moe HigaMashiro Yasunaga Artistic swimming Women's duet technical routine Yukiko Inui Artistic swimming Women's solo free routine Moe Higa Moeka Kijima Uta Kobayashi Ayano Shimada Ami Wada Akane Yanagisawa Mashiro Yasunaga Megumu Yoshida Artistic swimming Team free routine Hiroki ItoMinami Itahashi Diving Mixed synchronized 10 metre platform Moka Fujii Hikari Suzuki Yotaro Sato Akane Yanagisawa Ikoi Hirota Megumu Yoshida Tomoka Sato Moeka Kijima Artistic swimming Team acrobatic routine Moe HigaMashiro Yasunaga Artistic swimming Women's duet free routine Daiya Seto Swimming Men's 400 m individual medley Tomoru Honda Swimming Men's 200 m butterfly
Medals by sportSport TotalArtistic swimming4127Diving0011Swimming0022
Athletes by discipline The following is the list of number of competitors participating at the Championships per discipline. SportMenWomenTotalArtistic swimming 11314Diving 549High diving 101Open water swimming 448Swimming 202040Water polo 151530 Total4656102
Artistic swimming
Men AthleteEventPreliminariesFinalPointsRankPointsRank Yotaro Sato Solo free routine 167.7478 5 Q 167.9709 4
Women AthleteEventPreliminariesFinalPointsRankPointsRank Yukiko Inui Solo technical routine 273.2700 1 Q 276.5717 Solo free routine 253.1853 1 Q 254.6062 Moe Higa Mashiro Yasunaga Duet technical routine 215.2700 12 Q 273.9500 Duet free routine 178.1583 11 Q 249.5167
Mixed AthleteEventPreliminariesFinalPointsRankPointsRank Tomoka Sato Yotaro Sato Duet technical routine 227.7200 3 Q 255.5066 Duet free routine Did not start Moka Fujii Ikoi Hirota Moeka Kijima Tomoka Sato Yotaro Sato Hikari Suzuki Akane Yanagisawa Megumu Yoshida Team acrobatic routine 224.5167 4 Q 220.5867 Moe Higa Moeka Kijima Tomoka Sato Ayano Shimada Ami Wada Akane Yanagisawa Mashiro Yasunaga Megumu Yoshida Team technical routine 235.2972 7 Q 260.1055 4 Moe Higa Moeka Kijima Uta Kobayashi Ayano Shimada Ami Wada Akane Yanagisawa Mashiro Yasunaga Megumu Yoshida Team free routine 293.4522 3 Q 317.8085
Diving
Japan entered 9 divers. Men AthleteEventPreliminariesSemifinalsFinalPointsRankPointsRankPointsRankShu Ohkubo10 m platform336.6529Did not advanceRikuto Tamai1 m springboard298.6031colspan=2 Did not advance10 m platform404.5012 Q427.707 Q WithdrewHaruki Suyama3 m springboard365.6024Did not advanceYuto Araki Haruki Suyama3 m synchro springboard359.048 Qcolspan=2 375.907
Women AthleteEventPreliminariesSemifinalsFinalPointsRankPointsRankPointsRankMatsuri Arai10 m platform314.107 Q313.957 Q288.8511Haruka Enomoto3 m springboard232.8034Did not advanceSayaka Mikami316.052 Q340.553 Q305.257Matsuri Arai Minami Itahashi10 m synchro platform289.326 Qcolspan=2 284.765
Mixed AthleteEventFinalPointsRankHiroki Ito Minami Itahashi 10 m synchro platform305.34 High diving
Athlete EventPointsRankKyohei ArataMen's high diving222.65 20
Open water swimming
Japan entered 8 open water swimmers.
Men AthleteEventTimeRank Riku Ezawa Men's 5 km59:40.6 40 Kaiki Furuhata Men's 10 km1:54:07.7 22 Taishin Minamide Men's 10 km1:54:12.6 28 Kaito Tsujimori Men's 5 km58:17.2 37
Women AthleteEventTimeRank Airi Ebina Women's 10 km 2:05:08.4 28 Ichika Kajimoto Women's 5 km 1:00:56.4 14 Hanano Kato Women's 10 km 2:07:26.4 33 Miku Kojima Women's 5 km 1:02:28.8 35
Mixed AthleteEventTimeRank Airi Ebina Kaiki FuruhataIchika Kajimoto Kaito Tsujimori Team relay 1:13:38.5 7
Swimming
Japan entered 39 swimmers.
Men AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRankYuya Hinomoto50 m breaststroke 27.35 15 Q 27.25 11 Did not advanceTomoru Honda200 m butterfly1:54.211 Q1:54.435 Q1:53.66400 m individual medley4:16.7114colspan="2" Did not advance Ryosuke Irie 50 m backstroke 25.11 16 Q 25.21 15 Did not advance 100 m backstroke 53.98 18 Did not advanceTakeshi Kawamoto50 m backstroke25.0513 Q25.1414 Did not advance50 m butterfly23.7935 Did not advanceKatsuhiro Matsumoto100 m freestyle 48.58 21 Did not advance200 m freestyle1:46.448 Q1:45.971:46.378 SO2 Did not advance100 m butterfly51.4810 Q51.167 Q51.206Naoki Mizunuma50 m butterfly23.7533 Did not advance100 m butterfly 51.93 19 Did not advanceTeppei Morimoto200 m butterfly1:55.7210 Q1:55.3610 Did not advance Katsumi Nakamura 50 m freestyle 22.21 27 Did not advanceSo Ogata200 m individual medley1:57.883 Q1:57.065 Q1:57.828 Shoma Sato 200 m breaststroke 2:11.03 15 Q 2:10.72 14 Did not advance Daiya Seto200 m individual medley1:57.802 Q1:57.156 Q1:56.706400 m individual medley4:10.893 Qcolspan="2" 4:09.41 Shinri Shioura 50 m freestyle 22.15 23 Did not advanceHidekazu Takehara200 m backstroke1:58.4616 Q1:58.1014 Did not advance Ippei Watanabe 100 m breaststroke 1:00.28 17 Did not advance 200 m breaststroke 2:10.11 8 Q 2:09.50 8 Q 2:08.78 6Daiki Yanagawa200 m backstroke1:58.1413 Q1:57.237 Q1:58.758 Katsuhiro Matsumoto Masahiro Kawane Tomonobu Gomi Katsumi Nakamura 4 × 100 m freestyle relay 3:14.84 13colspan="2" Did not advance Hidenari ManoKatsuhiro Matsumoto Taikan TanakaFuyu Yoshida 4 × 200 m freestyle relay 7:08.70 9colspan="2" Did not advance Ryosuke Irie Ippei WatanabeNaoki Mizunuma Katsuhiro Matsumoto 4 × 100 m medley relay 3:32.36 7 Qcolspan="2" 3:32.58 6
Women AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRankReona Aoki100 m breaststroke 1:06.61 10 Q 1:06.32 9 Did not advanceHanane Hironaka200 m backstroke 2:12.57 17 Did not advanceRikako Ikee50 m freestyle 25.27 20 Did not advance100 m freestyle54.6716 Q54.8615 Did not advance50 m butterfly25.503 Q25.725 Q25.787100 m butterfly 58.61 17 Did not advance Nagisa Ikemoto 200 m freestyle 1:59.23 22 Did not advanceRuna Imai200 m breaststroke 2:25.27 8 Q 2:24.68 9 Did not advanceWaka Kobori400 m freestyle4:07.4810colspan="2" Did not advance800 m freestyle8:29.5411colspan="2" Did not advanceHiroko Makino200 m butterfly2:09.038 Q2:08.409 Did not advanceAiri Mitsui200 m butterfly2:08.546 Q2:07.517 Q2:07.155 Yukimi Moriyama 1500 m freestyle 16:18.66 13colspan="2" Did not advanceMiyu Namba400 m freestyle4:10.2316colspan="2" Did not advance800 m freestyle8:34.6216colspan="2" Did not advanceMio Narita200 m individual medley2:11.6915 Q2:12.2412 Did not advance400 m individual medley4:38.053 Qcolspan="2" 4:42.148Yui Ohashi200 m individual medley2:10.809 Q2:10.325 Q2:11.276Rio Shirai100 m backstroke1:00.8319 Did not advance200 m backstroke2:11.2413 Q2:12.4514 Did not advanceAi Soma50 m butterfly 25.96 8 Q 26.18 15 Did not advance100 m butterfly 58.17 13 Q 58.27 14 Did not advanceSatomi Suzuki50 m breaststroke 30.29 5 Q 30.33 8 Q 30.44 7100 m breaststroke 1:06.20 5 Q 1:06.31 8 Q 1:06.67 8Miki Takahashi50 m backstroke 27.84 7 Q 28.13 14 Did not advanceAgeha Tanigawa400 m individual medley4:40.219 colspan=2 Did not advance Rikako Ikee Nagisa Ikemoto Yume Jinno Rio Shirai freestyle relay 3:37.71 8 Q colspan=2 3:38.61 8 Rio Shirai Nagisa IkemotoChihiro Igarashi Kinuko Mochizuki freestyle relay 7:57.22 9 colspan=2 Did not advance Rio Shirai Satomi Suzuki Ai SomaRikako IkeeReona Aoki 4 × 100 m medley relay 3:58.58 8 Q colspan=2 3:58.02 6 Mixed AthleteEventHeatFinalTimeRankTimeRank Tomonobu Gomi Katsumi Nakamura Nagisa Ikemoto Yume Jinno 4 × 100 m freestyle relay 3:26.47 6 Q 3:26.96 7 Ryosuke IrieIppei WatanabeAi Soma Rikako Ikee 4 × 100 m medley relay 3:44.79 7 Q 3:45.33 7
Water polo
Summary TeamEventGroup stagePlayoffQuarterfinalSemifinalFinal / OppositionScoreOppositionScoreOppositionScoreRankOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankMen's tournament L 8–16 W 20–9 L 12–17 3 QP L 10–16 L 15–16 W 23–11 11Women's tournament L 16–17 L 21–26 L 12–17 4 W 21–11 L 10–18 14
Men's tournament
Team roster
Group play
Playoffs
9–12th place semifinals
Eleventh place game
Women's tournament
Team roster
Group play
13–16th place semifinals
13th place game
References