Japan at the 2018 Asian Games
Japan participated in the 2018 Asian Games as a competing nation, in Jakarta and Palembang, Indonesia, from 18 August to 2 September 2018.
Medalists
The following Japan competitors won medals at the Games.;By sport events
;Timeline
;Demonstration events
| Medal | Name | Sport | Event | Date |
| Naoki Sugimura Tsubasa Aihara | eSports | Pro Evolution Soccer tournament |
Competitors
The number of competitors representing Japan in each sport at the Games was:| Sport | Men | Women | Total |
| Archery | 4 | 4 | 8 |
| Artistic swimming | — | 9 | 9 |
| Athletics | 35 | 23 | 58 |
| Badminton | 10 | 10 | 20 |
| Baseball | 23 | — | 23 |
| Basketball | 16 | 16 | 32 |
| Bowling | 6 | 6 | 12 |
| Boxing | 7 | 1 | 8 |
| Canoeing | 11 | 8 | 19 |
| Contract bridge | 9 | 3 | 12 |
| Cycling | 14 | 10 | 24 |
| Diving | 3 | 4 | 7 |
| Equestrian | 11 | 1 | 12 |
| Fencing | 12 | 12 | 24 |
| Field hockey | 18 | 18 | 36 |
| Football | 20 | 18 | 38 |
| Golf | 4 | 3 | 7 |
| Gymnastics | 7 | 11 | 18 |
| Handball | 15 | 16 | 31 |
| Judo | 10 | 10 | 20 |
| Kabaddi | 10 | 10 | 20 |
| Karate | 4 | 4 | 8 |
| Kurash | 2 | 0 | 2 |
| Modern pentathlon | 2 | 2 | 4 |
| Paragliding | 5 | 3 | 8 |
| Pencak silat | 1 | 0 | 1 |
| Roller sports | 2 | 2 | 4 |
| Rowing | 7 | 7 | 14 |
| Rugby sevens | 12 | 12 | 24 |
| Sailing | 7 | 5 | 12 |
| Sambo | 2 | 1 | 3 |
| Sepak takraw | 9 | 9 | 18 |
| Shooting | 9 | 9 | 18 |
| Soft tennis | 5 | 5 | 10 |
| Softball | — | 17 | 17 |
| Sport climbing | 2 | 2 | 4 |
| Squash | 3 | 3 | 6 |
| Swimming | 19 | 19 | 38 |
| Table tennis | 4 | 4 | 8 |
| Taekwondo | 3 | 3 | 6 |
| Tennis | 5 | 5 | 10 |
| Triathlon | 3 | 2 | 5 |
| Volleyball | 18 | 18 | 36 |
| Water polo | 13 | 13 | 26 |
| Weightlifting | 8 | 7 | 15 |
| Wrestling | 12 | 6 | 18 |
| Wushu | 4 | 2 | 6 |
| Total | 406 | 353 | 759 |
Archery
;Recurve;Compound
Artistic swimming
Japan has fielded a squad of nine artistic swimmers to compete in the women's duet and team events.FR: Reserved in free routine; TR: Reserved in technical routine.
Athletics
;Men;Track & road events
;Field events
;Combined events – Decathlon
| Athlete | Event | Final | Rank | ||||||||||
| Akihiko Nakamura | Result | 10.95 | 7.34 | 11.43 | 1.97 | 48.87 | 14.45 | 36.84 | 4.80 | 51.35 | 4:24.75 | 7738 | |
| Akihiko Nakamura | Points | 872 | 896 | 572 | 776 | 867 | 917 | 601 | 849 | 609 | 779 | 7738 | |
| Keisuke Ushiro | Result | 11.39 | 7.09 | 14.49 | 1.97 | 50.29 | 15.09 | 45.09 | 4.90 | 63.07 | 4:44.11 | 7878 | |
| Keisuke Ushiro | Points | 776 | 835 | 758 | 776 | 801 | 839 | 774 | 880 | 784 | 655 | 7878 |
;Women
;Track & road events
;Field events
;Combined events - Heptathlon
| Athlete | Event | Final | Rank | |||||||
| Meg Hemphill | Result | 13.69 | 1.64 | 11.97 | 25.37 | 5.97 | 43.71 | 2:25.00 | 5654 | 6 |
| Meg Hemphill | Points | 1023 | 783 | 659 | 853 | 840 | 739 | 757 | 5654 | 6 |
| Yuki Yamasaki | Result | 14.02 | 1.70 | 12.13 | 24.75 | 5.89 | 46.48 | 2:17.75 | 5873 | |
| Yuki Yamasaki | Points | 976 | 855 | 670 | 910 | 816 | 792 | 854 | 5873 |
;Mixed
Badminton
Nippon Badminton Association announced its squad of 20 players on 6 June 2018.;Men
;Women
;Mixed
Baseball
Japan participated in the baseball competition at the Games, and the team were drawn in the group A.;Roster
The following is the Japan roster for the men's baseball tournament of the 2018 Asian Games. The team of 24 players was officially named on 18 June 2018. The team remain of 23 players after Shunpei Yoshikawa withdrawal from the Games.
;Round 2 – Group A
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;Super round
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;Final
Basketball
;Summary5x5 basketball
Japan men's team will compete in group C at the Games, while the women's team in group Y.Men's tournament
;RosterThe following is the Japan roster in the men's basketball tournament of the 2018 Asian Games.
;Group C
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;Quarter-final
;Classification 5th–8th
;Seventh place game
Women's tournament
;RosterThe following is the Japan roster in the women's basketball tournament of the 2018 Asian Games.
;Group Y
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;Quarter-final
;Semifinal
;Bronze medal game
3x3 basketball
Japan national 3x3 team participated in the Games. The men's team placed in the pool C and the women's team in the pool B based on the FIBA 3x3 federation ranking.Men's tournament
;RosterThe following is the Japan roster in the men's 3x3 basketball tournament of the 2018 Asian Games.
- Ryuto Yasuoka
- Hayate Arakawa
- Tensho Sugimoto
- Yoshiyuki Matsuwaki
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;Quarter-final
Women's tournament
;RosterThe following is the Japan roster in the women's 3x3 basketball tournament of the 2018 Asian Games.
- Ririka Okuyama
- Norika Konno
- Miwa Kuribayashi
- Kiho Miyashita
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;Quarter-final
;Semifinal
;Gold medal game
Bowling
;Men;Women
Boxing
;Men;Women
Canoeing
Sprint
Qualification legend: QF=Final; QS=SemifinalContract bridge
;Men;Mixed
Cycling
Track
;Sprint;Team sprint
Riders who entered the competition but did not participating in any phase of the team event.
Qualification legend: FA=Gold medal final; FB=Bronze medal final
;Pursuit
Riders who participated in the heats only and received medals.
Qualification legend: FA=Gold medal final; FB=Bronze medal final
;Keirin
Qualification legend: FA=Gold medal final; FB=Bronze medal final
;Omnium
;Madison
| Athlete | Event | Points | Laps | Rank |
| Eiya Hashimoto Shunsuke Imamura | Men's madison | 28 | 0 | |
| Yuya Hashimoto Yumi Kajihara | Women's madison | 14 | 0 | 4 |
Diving
;Men;Women
Equestrian
;Dressage;Eventing
;Jumping
- – indicates that the score of this rider does not count in the team competition, since only the best three results of a team are counted.
Esports (demonstration)
;Hearthstone;Pro Evolution Soccer
Fencing
;Individual;Team
Field hockey
Japan men's and women's team qualified automatically via 2014 Asian Games, both teams were placed in the pool A respectively.;Summary
Men's tournament
;Roster;Pool A
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;Semifinal
;Gold medal game
Women's tournament
;Roster;Pool A
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;Semifinal
;Gold medal game
Football
Japan men's team were drawn in group D, while the women's team in group C.;Summary
Men's tournament
;Roster;Group D
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;Round of 16
;Quarter-final
;Semi-final
;Gold medal game
Women's tournament
;Roster;Group C
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;Quarter-final
;Semi-final
;Gold medal game
Golf
;Men;Women
Handball
Japan men's and women's team were drawn in group B respectively.;Summary
Key:
- ET – After extra time
- P – Match decided by penalty-shootout.
Men's tournament
;Roster- Hozuki Higashinagahama
- Kenya Kasahara
- Akihito Kai
- Kohei Narita
- Jin Watanabe
- Motoki Sakai
- Hiroki Shida
- Hiroki Motoki
- Hiroyasu Tamakawa
- Kairi Kochi
- Tatsuki Yoshino
- Yuto Agarie
- Naohiro Hamaguchi
- Daichi Komuro
- Tetsuya Kadoyama
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;Main round
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;Semifinal
;Bronze medal game
Women's tournament
;Roster- Kimiko Hida
- Mika Nagata
- Kaho Sunami
- Sayo Shiota
- Asuka Fujita
- Aya Yokoshima
- Minami Itano
- Chie Katsuren
- Hitomi Tada
- Natsumi Akiyama
- Nozomi Hara
- Mana Ohyama
- Shiori Nagata
- Miyuki Terada
- Tomomi Kawata
- Mayuko Ishitate
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;Semifinal
;Bronze medal game
Judo
All Japan Judo Federation delegate 14 judokas to compete at the Games.;Men
| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage | Final / | Rank | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Toru Shishime | –60 kg |  PK Phok|CAM|2018 Asian GamesKabaddi;SummaryMen's tournament;Team roster
Women's tournament;Team roster
Kurash;MenModern pentathlonJapan entered four pentathletes at the Games.Paragliding;Men;Women Pencak silat;SeniRowing;Men;Women Rugby sevensJapan rugby sevens men's and women's team entered the group B at the Games.Men's tournament;SquadThe following is the Japan squad in the men's rugby sevens tournament of the 2018 Asian Games. The team of 12 players was officially named by the Japan Rugby Football Union.
---- ---- ;Quarterfinal ;Semifinal ;Gold medal game Women's tournament;SquadThe following is the Japan squad in the women's rugby sevens tournament of the 2018 Asian Games. The team of 12 players was officially named by the Japan Rugby Football Union.
---- ---- ;Quarterfinal ;Semifinal ;Gold medal game Sailing;Men;Women ;Mixed SamboKey:
Sepak takraw;Men;Women Shooting;Men;Women ;Mixed team Softball;Summary;Roster
---- ---- ---- ---- ---- ;Semifinal ;Final Sport climbing;Speed;Combined Squash;Singles;Team SwimmingMenSwimmers who participated in the heats only and received medals.WomenSwimmers who participated in the heats only and received medals.MixedSwimmers who participated in the heats only and received medals.Table tennis;Individual;Team Taekwondo;Poomsae;Kyorugi Tennis;Men;Women ;Mixed Triathlon;Individual
;Mixed relay
VolleyballIndoor volleyballMen's tournament;Team rosterThe following is the Japanese roster in the men's volleyball tournament of the 2018 Asian Games. Head coach: Gordon Mayforth
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