# Japan at the 2008 Summer Olympics

Japan competed at the 2008 Summer Olympics in Beijing, People's Republic of China. The delegation of athletes and officials were represented by the Japanese Olympic Committee.
The list of qualified entries for Japan is shown. In some cases, the country qualified for a position in the Olympic Games, and the individual performance in the qualifying event was good enough to guarantee the same person a spot on Japan's team. In other cases, the Japan Olympic Committee assigned a competitor at a later date to fill some of the country's qualified positions, and the Olympic competitor may or may not be the same as the one who participated in the qualifying competition.

## Medalists

| Medal | Name | Sport | Event | Date |
| Gold | Masato Uchishiba | Judo | Men's 66 kg | August 10 |
| Gold | Kosuke Kitajima | Swimming | Men's 100 m breaststroke | August 11 |
| Gold | Ayumi Tanimoto | Judo | Women's 63 kg | August 12 |
| Gold | Masae Ueno | Judo | Women's 70 kg | August 13 |
| Gold | Kosuke Kitajima | Swimming | Men's 200 m breaststroke | August 14 |
| Gold | Satoshi Ishii | Judo | Men's +100 kg | August 15 |
| Gold | Saori Yoshida | Wrestling | Women's freestyle 55 kg | August 16 |
| Gold | Kaori Icho | Wrestling | Women's freestyle 63 kg | August 17 |
| Gold | Naho Emoto Motoko Fujimoto Megu Hirose Emi Inui Sachiko Ito Ayumi Karino Satoko Mabuchi Yukiyo Mine Masumi Mishina Rei Nishiyama Hiroko Sakai Rie Sato Mika Someya Yukiko Ueno Eri Yamada | Softball | Tournaments | August 21 |
| Silver | Takehiro Kashima Takuya Nakase Makoto Okiguchi Koki Sakamoto Hiroyuki Tomita Kōhei Uchimura | Gymnastics | Team all-around | August 12 |
| Silver | Yuki Ota | Fencing | Men's foil | August 13 |
| Silver | Kōhei Uchimura | Gymnastics | Individual all-around | August 14 |
| Silver | Maki Tsukada | Judo | Women's +78 kg | August 15 |
| Silver | Chiharu Icho | Wrestling | Women's freestyle 48 kg | August 16 |
| Silver | Tomohiro Matsunaga | Wrestling | Men's freestyle 55 kg | August 19 |
| Silver | Kenichi Yumoto | Wrestling | Men's freestyle 60 kg | August 19 |
| Silver | Naoki Tsukahara Shingo Suetsugu Shinji Takahira Nobuharu Asahara | Athletics | Men's 4 × 100 m relay | August 22 |
| Bronze | Ryoko Tani | Judo | Women's 48 kg | August 9 |
| Bronze | Misato Nakamura | Judo | Women's 52 kg | August 10 |
| Bronze | Takeshi Matsuda | Swimming | Men's 200 m butterfly | August 13 |
| Bronze | Reiko Nakamura | Swimming | Women's 200 m backstroke | August 16 |
| Bronze | Kiyofumi Nagai | Cycling | Keirin | August 16 |
| Bronze | Junichi Miyashita Kosuke Kitajima Takuro Fujii Hisayoshi Sato | Swimming | Men's 4 × 100 m medley relay | August 17 |
| Bronze | Kyoko Hamaguchi | Wrestling | Women's freestyle 72 kg | August 17 |
| Bronze | Saho Harada Emiko Suzuki | Synchronized swimming | Women's duet | August 20 |
Medals by sport :
| Sport | | | | Total |
| Judo | 4 | 1 | 2 | 7 |
| Wrestling | 2 | 3 | 1 | 5 |
| Swimming | 2 | 0 | 3 | 5 |
| Softball | 1 | 0 | 0 | 1 |
| Gymnastics | 0 | 2 | 0 | 2 |
| Athletics | 0 | 1 | 0 | 1 |
| Fencing | 0 | 1 | 0 | 1 |
| Cycling | 0 | 0 | 1 | 1 |
| Synchronized swimming | 0 | 0 | 1 | 1 |
| Total | 9 | 8 | 8 | 25 |

## Archery

Japan qualified four archers (two men and two women) through the 2007 World Outdoor Target Championships individual competitions, and added a third women's qualification spot at the Asian Championships. This allowed Japan to compete in the women's team competition at the Olympics, as well as having three women and two men compete in the individual competitions. Takaharu Furukawa, Ryuichi Moriya, Nami Hayakawa, Sayoko Kitabatake and Yuki Hayashi were the archers who earned the qualification spots for Japan.
Japan has not yet won an Olympic gold medal in archery; its best results are a pair of silver medals, including Hiroshi Yamamoto's in the 2004 men's individual competition.

### Men

| Athlete | Event | Ranking round | Ranking round | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Takaharu Furukawa | Individual | 663 | 17 | Kunda (BLR) (48) L 111 (18)–111 (19) | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Ryuichi Moriya | Individual | 661 | 22 | Piatek (POL) (43) W 109 (10)–109 (9) | Wang C-P (TPE) (11) W 114–109 | Tsyrempilov (RUS) (6) W 113–110 | Ruban (UKR) (3) L 106–115 | did not advance | did not advance | did not advance |

### Women

| Athlete | Event | Ranking round | Ranking round | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Nami Hayakawa | Individual | 649 | 9 | Mousikou (CYP) (56) W 112–103 | Nichols (USA) (24) W 105–103 | Folkard (GBR) (8) W 106–97 | Park S-H (KOR) (1) L 103–112 | did not advance | did not advance | did not advance |
| Yuki Hayashi | Individual | 616 | 48 | Esebua (GEO) (17) L 102 (8)–102 (9) | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Sayoko Kitabatake | Individual | 616 | 46 | Mosypinek (POL) (19) W 103–101 | Schuh (FRA) (14) L 100–112 | did not advance | did not advance | did not advance | did not advance | did not advance |
| Nami Hayakawa Yuki Hayashi Sayoko Kitabatake | Team | 1881 | 7 | — | — | Colombia (COL) (10) W 206–199 | Great Britain (GBR) (2) L 196–201 | did not advance | did not advance | did not advance |

## Athletics
### Key

* Note–Ranks given for track events are within the athlete's heat only
* Q = Qualified for the next round
* q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
* NR = National record
* N/A = Round not applicable for the event
* Bye = Athlete not required to compete in round

### Track & road events

| Athlete | Event | Heat | Heat | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank | Result | Rank |
| Nobuharu Asahara | 100 m | 10.25 | 4 q | 10.37 | 8 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yoshitaka Iwamizu | 3000 m steeplechase | 8:29.80 | 9 | — | — | — | — | Did not advance | Did not advance |
| Yuzo Kanemaru | 400 m | 46.39 | 7 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Takayuki Matsumiya | 5000 m | 14:20.24 | 13 | — | — | — | — | Did not advance | Did not advance |
| Takayuki Matsumiya | 10000 m | — | — | — | — | — | — | 28:39.77 | 31 |
| Koichiro Morioka | 20 km walk | — | — | — | — | — | — | 1:21:57 | 16 |
| Masato Naito | 110 m hurdles | 13.96 | 7 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kenji Narisako | 400 m hurdles | 49.63 | 5 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Tsuyoshi Ogata | Marathon | — | — | — | — | — | — | 2:13:26 | 13 |
| Satoshi Osaki | Marathon | — | — | — | — | — | — | DNS | DNS |
| Atsushi Sato | Marathon | — | — | — | — | — | — | 2:41:08 | 76 |
| Shingo Suetsugu | 200 m | 20.93 | 6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Shinji Takahira | 200 m | 20.58 | 4 q | 20.63 | 7 | Did not advance | Did not advance | Did not advance | Did not advance |
| Kensuke Takezawa | 5000 m | 13:49.42 | 7 | — | — | — | — | Did not advance | Did not advance |
| Kensuke Takezawa | 10000 m | — | — | — | — | — | — | 28:23.28 | 28 |
| Dai Tamesue | 400 m hurdles | 49.82 | 4 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Takayuki Tanii | 20 km walk | — | — | — | — | — | — | DSQ | DSQ |
| Takayuki Tanii | 50 km walk | — | — | — | — | — | — | 4:01:37 | 29 |
| Naoki Tsukahara | 100 m | 10.39 | 2 Q | 10.23 | 3 Q | 10.16 | 7 | Did not advance | Did not advance |
| Yuki Yamazaki | 20 km walk | — | — | — | — | — | — | 1:21:18 | 11 |
| Yuki Yamazaki | 50 km walk | — | — | — | — | — | — | 3:45:47 | 7 |
| Nobuharu Asahara Shingo Suetsugu Shinji Takahira Naoki Tsukahara | 4 × 100 m relay | 38.52 | 2 Q | — | — | — | — | 38.15 | |
| Mitsuhiro Abiko Yoshihiro Horigome Kenji Narisako Dai Tamesue | 4 × 400 m relay | 3:04.18 | 6 | — | — | — | — | Did not advance | Did not advance |

### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Naoyuki Daigo | High jump | 2.15 | 36 | Did not advance | Did not advance |
| Yukifumi Murakami | Javelin throw | 78.21 | 15 | Did not advance | Did not advance |
| Koji Murofushi | Hammer throw | 78.16 | 5 Q | 80.71 | 5 |
| Daichi Sawano | Pole vault | 5.55 | 16 | Did not advance | Did not advance |

### Track & road events

| Athlete | Event | Heat | Heat | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank | Result | Rank |
| Yukiko Akaba | 5000 m | 15:38.30 | 12 | — | — | — | — | Did not advance | Did not advance |
| Yukiko Akaba | 10000 m | — | — | — | — | — | — | 32:00.37 | 20 |
| Kayoko Fukushi | 5000 m | 15:20.46 | 10 | — | — | — | — | Did not advance | Did not advance |
| Kayoko Fukushi | 10000 m | — | — | — | — | — | — | 31:01.14 | 11 |
| Chisato Fukushima | 100 m | 11.74 | 6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Minori Hayakari | 3000 m steeplechase | 9:49.70 | 16 | — | — | — | — | Did not advance | Did not advance |
| Mayumi Kawasaki | 20 km walk | — | — | — | — | — | — | 1:29:43 | 14 |
| Yuriko Kobayashi | 5000 m | 15:15.87 | 7 | — | — | — | — | Did not advance | Did not advance |
| Sachiko Konishi | 20 km walk | — | — | — | — | — | — | 1:32:21 | 26 |
| Yurika Nakamura | Marathon | — | — | — | — | — | — | 2:30:19 | 13 |
| Satomi Kubokura | 400 m hurdles | 55.82 SB | 3 Q | — | — | 56.69 | 7 | Did not advance | Did not advance |
| Yoko Shibui | 10000 m | — | — | — | — | — | — | 31:31.13 | 17 |
| Asami Tanno | 400 m | 52.60 | 4 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Reiko Tosa | Marathon | — | — | — | — | — | — | DNF | DNF |
| Sayaka Aoki Mayu Kida Satomi Kubokura Asami Tanno | 4 × 400 m relay | 3:30.52 SB | 8 | — | — | — | — | Did not advance | Did not advance |

### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Kumiko Ikeda | Long jump | 6.47 | 19 | Did not advance | Did not advance |

## Badminton
### Men

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Shoji Sato | Singles | Bye | Sridhar (IND) W 21–13, 21–17 | Gade (DEN) L 21–19, 20–22, 15–21 | Did not advance | Did not advance | Did not advance | Did not advance |
| Shintaro Ikeda Shuichi Sakamoto | Doubles | — | — | Koo K K / Tan B H (MAS) L 12–21, 16–21 | Did not advance | Did not advance | Did not advance | Did not advance |
| Keita Masuda Tadashi Ohtsuka | Doubles | — | — | Hadiyanto / Yulianto (INA) W 19–21, 21–14, 21–14 | Lee J-j / Hwang J-m (KOR) L 12–21, 21–18, 9–21 | Did not advance | Did not advance | Did not advance |

### Women

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Eriko Hirose | Singles | Ingólfsdóttir (ISL) W 21–6, 19–7$^r$ | Nguyen (VIE) W 21–7, 21–12 | Pi (FRA) L 12–21, 21–16, 6–21 | Did not advance | Did not advance | Did not advance | Did not advance |
| Miyuki Maeda Satoko Suetsuna | Doubles | — | — | Luiz / Tanaka (AUS) W 21–4, 21–8 | Yang W / Zhang Jw (CHN) W 8–21, 23–21, 21–14 | Lee K-w / Lee H-j (KOR) L 20–22, 15–21 | Zhang Yw / Wei Yl (CHN) L 17–21, 10–21 | 4 |
| Kumiko Ogura Reiko Shiota | Doubles | — | — | Kristiansen / Juhl (DEN) W 18–21, 21–14, 21–18 | Du J / Yu Y (CHN) L 8–21, 5–21 | Did not advance | Did not advance | Did not advance | Did not advance |

## Baseball

Japan's victory in the 2007 Asian Baseball Championship qualified the Japan national baseball team for Olympic competition. Japan, along with Cuba, has appeared in every Olympic baseball tournament since the sport was elevated to official status. Japan has reached the semifinals each year and taken one silver and two bronze medals, but has yet to win the Olympic championship.

### Roster

Group stage
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 9 | 1 |
| Cuba | 0 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | X | 4 | 9 | 1 |
| WP: Norge Luis Vera (1-0) LP: Yu Darvish (0-1) Sv: Pedro Luis Lazo (1) |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Netherlands | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 |
| Japan | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | X | 6 | 10 | 0 |
| WP: Toshiya Sugiuchi (1-0) LP: Alexander Smit (0-1) Home runs: NED: None JPN: Takahiko Sato (1) |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 5 | 0 |
| Canada | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
| WP: Yoshihisa Naruse (1-0) LP: Chris Begg (1-1) Sv: Koji Uehara (1) Home runs: JPN: Atsunori Inaba (1) CAN: None |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | R | H | E |
| United States | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 5 | 0 |
| Japan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 5 | 0 |
| WP: Jeff Stevens (1-2) LP: Hitoki Iwase (0-2) Sv: Casey Weathers (1) |||||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 4 | 6 | 9 | 1 |
| Chinese Taipei | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 0 |
| WP: Hideaki Wakui (1-0) LP: Fu-Te Ni (0-1) Home runs: JPN: Shinnosuke Abe (1) TPE: None |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| South Korea | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 5 | 9 | 1 |
| Japan | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 3 | 7 | 1 |
| WP: Suk-Min Yoon (2-0) LP: Hitoki Iwase (0-1) Sv: Tae-Hyon Chong (1) Home runs: KOR: Dae-Ho Lee (2) JPN: Takahiro Arai (1) |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| China | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | - | 0 | 2 | 0 |
| Japan | 0 | 3 | 1 | 0 | 0 | 6 | X | - | - | 10 | 10 | 0 |
| WP: Hideaki Wakui (2-0) LP: Nan Wang (0-1) Home runs: CHN: None JPN: Tsuyoshi Nishioka (1) |||||||||||||
Group table
| Team | G | W | L | RS | RA | WIN% | GB | Tiebreaker |
| South Korea | 7 | 7 | 0 | 41 | 22 | 1.000 | - | - |
| Cuba | 7 | 6 | 1 | 52 | 23 | .857 | 1 | - |
| United States | 7 | 5 | 2 | 40 | 22 | .714 | 2 | - |
| Japan | 7 | 4 | 3 | 30 | 14 | .571 | 3 | - |
| Chinese Taipei | 7 | 2 | 5 | 29 | 33 | .286 | 5 | 1-0 |
| Canada | 7 | 2 | 5 | 29 | 20 | .286 | 5 | 0-1 |
| Netherlands | 7 | 1 | 6 | 9 | 50 | .143 | 6 | 1-0 |
| China | 7 | 1 | 6 | 14 | 60 | .143 | 6 | 0-1 |
Semifinal
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 | 2 |
| South Korea | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 4 | X | 6 | 10 | 1 |
| WP: Kwang-Hyun Kim (1-0) LP: Hitoki Iwase (0-3) Home runs: JPN: None KOR: Seung-Yeop Lee (1) |||||||||||||
Bronze medal game
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 1 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 6 | 1 |
| United States | 0 | 1 | 3 | 0 | 4 | 0 | 0 | 0 | X | 8 | 9 | 0 |
| WP: Brett Anderson (1-0) LP: Kenshin Kawakami (0-1) Home runs: JPN: Masahiro Araki (1), Norichika Aoki (1) USA: Matt LaPorta (2), Matt Brown (2), Jason Donald (1) |||||||||||||

## Boxing

Japan qualified two boxers for the Olympic boxing tournament. Masatsugu was the first when he qualified at the World Championships. Satoshi was the second, qualifying at the first Asian qualifying event.
| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Satoshi Shimizu | Featherweight | Bye | Kılıç (TUR) L 9–12 | Did not advance | Did not advance | Did not advance | Did not advance |
| Masatsugu Kawachi | Light welterweight | Bye | Boonjumnong (THA) L 1–8 | Did not advance | Did not advance | Did not advance | Did not advance |

## Canoeing
### Slalom

| Athlete | Event | Preliminary | Preliminary | Preliminary | Preliminary | Preliminary | Preliminary | Semifinal | Semifinal | Final | Final | Final | Final |
| Athlete | Event | Run 1 | Rank | Run 2 | Rank | Total | Rank | Time | Rank | Time | Rank | Total | Rank |
| Takuya Haneda | Men's C-1 | 94.08 | 13 | 92.24 | 14 | 186.32 | 14 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kazuki Yazawa | Men's K-1 | 89.82 | 19 | 90.05 | 18 | 179.87 | 18 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Hiroyuki Nagao Masatoshi Sanma | Men's C-2 | 99.47 | 8 | 113.09 | 10 | 212.56 | 10 Q | 110.10 | 9 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuriko Takeshita | Women's K-1 | 111.63 | 14 | 113.08 | 18 | 224.71 | 15 Q | 107.86 | 6 Q | 111.44 | 4 | 219.30 | 4 |

### Sprint

| Athlete | Event | Heats | Heats | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Shinobu Kitamoto | Women's K-1 500 m | 1:52.148 | 4 QS | 2:01.105 | 9 | Did not advance | Did not advance |
| Shinobu Kitamoto Mikiko Takeya | Women's K-2 500 m | 1:46.980 | 6 QS | 1:43.541 | 1 Q | 1:43.291 | 5 |
| Shinobu Kitamoto Ayaka Kuno Yumiko Suzuki Mikiko Takeya | Women's K-4 500 m | 1:38.618 | 5 QS | 1:37.449 | 2 Q | 1:36.465 | 6 |
Qualification Legend: QS = Qualify to semi-final; QF = Qualify directly to final

## Cycling
### Road

| Athlete | Event | Time | Rank |
| Fumiyuki Beppu | Men's road race | Did not finish | Did not finish |
| Fumiyuki Beppu | Men's time trial | 1:11:05 | 39 |
| Takashi Miyazawa | Men's road race | 6:55:24 | 85 |
| Miho Oki | Women's road race | 3:33:17 | 31 |

### Track

Japan has qualified entries in men's Keirin, sprint, team sprint and points race, and women's points race and sprint.

#### Sprint

| Athlete | Event | Qualification | Qualification | Round 1 | Repechage 1 | Round 2 | Repechage 2 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Time Speed (km/h) | Rank | Opposition Time Speed (km/h) | Opposition Time Speed (km/h) | Opposition Time Speed (km/h) | Opposition Time Speed (km/h) | Opposition Time Speed (km/h) | Opposition Time Speed (km/h) | Opposition Time Speed (km/h) | Rank |
| Tsubasa Kitatsuru | Men's sprint | 10.391 69.290 | 14 | Bourgain (FRA) L | Awang (MAS) Kwiatkowski (POL) L | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kazunari Watanabe | Men's sprint | 10.346 69.592 | 11 | Chiappa (ITA) L | Blatchford (USA) Zhang L (CHN) W 10.965 65.663 | Hoy (GBR) L | Sireau (FRA) Bayley (AUS) L | Did not advance | Did not advance | 9th place final Nimke (GER) Chiappa (ITA) Bayley (AUS) L | 12 |
| Kiyofumi Nagai Tomohiro Nagatsuka Kazunari Watanabe | Men's team sprint | 44.454 60.736 | 6 | Germany (GER) L 44.437 60.760 | — | — | — | — | — | Did not advance | 6 |
| Sakie Tsukuda | Women's sprint | 12.134 59.337 | 12 | Pendleton (GBR) L | Tsylinskaya (BLR) Guerra (CUB) L | — | — | Did not advance | Did not advance | 9th place final Grankovskaya (RUS) Guerra (CUB) Hijgenaar (NED) L | 12 |

#### Keirin

| Athlete | Event | 1st round | Repechage | 2nd round | Final |
| Athlete | Event | Rank | Rank | Rank | Rank |
| Toshiaki Fushimi | Men's keirin | 3 R | 4 | Did not advance | Did not advance |
| Kiyofumi Nagai | Men's keirin | 3 R | 1 Q | 2 Q | |

#### Omnium

| Athlete | Event | Points | Laps | Rank |
| Makoto Iijima | Men's points race | 23 | 1 | 8 |
| Satomi Wadami | Women's points race | Did not finish | Did not finish | Did not finish |

### Mountain biking

| Athlete | Event | Time | Rank |
| Kohei Yamamoto | Men's cross-country | LAP (3 lap) | 46 |
| Rie Katayama | Women's cross-country | LAP (1 lap) | 20 |

### BMX

| Athlete | Event | Seeding | Seeding | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Result | Rank | Points | Rank | Points | Rank | Result | Rank |
| Akifumi Sakamoto | Men's BMX | 40.548 | 32 | 19 | 7 | Did not advance | Did not advance | Did not advance | Did not advance |

## Diving

One Japanese member qualified for the 3 meter springboard event, by virtue of Ken Terauchi's third-place finish in the semifinal round at the 2007 World Championships. This was the first individual qualification spot earned by Japan for the 2008 Olympics.

### Men

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Ken Terauchi | 3 m springboard | 452.80 | 10 Q | 478.25 | 7 Q | 442.50 | 11 |

### Women

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Mai Nakagawa | 10 m platform | 331.40 | 9 Q | 314.60 | 10 Q | 296.30 | 11 |

## Equestrian
### Dressage

| Athlete | Horse | Event | Grand Prix | Grand Prix | Grand Prix Special | Grand Prix Special | Grand Prix Freestyle | Grand Prix Freestyle | Overall | Overall |
| Athlete | Horse | Event | Score | Rank | Score | Rank | Score | Rank | Score | Rank |
| Hiroshi Hoketsu | Whisper | Individual | 62.542 | 35 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuko Kitai | Rambo | Individual | 59.250 | 45 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Mieko Yagi | Dow Jones | Individual | 60.167 | 42 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Hiroshi Hoketsu Yuko Kitai Mieko Yagi | See above | Team | — | — | — | — | — | — | 60.653 | 9 |

### Eventing

| Athlete | Horse | Event | Dressage | Dressage | Cross-country | Cross-country | Cross-country | Jumping | Jumping | Jumping | Jumping | Jumping | Jumping | Total | Total |
| Athlete | Horse | Event | Dressage | Dressage | Cross-country | Cross-country | Cross-country | Qualifier | Qualifier | Qualifier | Final | Final | Final | | | Total | Total |
| Athlete | Horse | Event | Penalties | Rank | Penalties | Total | Rank | Penalties | Total | Rank | Penalties | Total | Rank | Penalties | Rank |
| Yoshiaki Oiwa | Gorgeous George | Individual | 52.40 | 40 | 76.40 | 128.80 | 55 | 8.00 | 136.80 | 49 | Did not advance | Did not advance | Did not advance | 136.80 | 49 |

### Show jumping

| Athlete | Horse | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Total | Total |
| Athlete | Horse | Event | Round 1 | Round 1 | Round 2 | Round 2 | Round 2 | Round 3 | Round 3 | Round 3 | Round A | Round A | Round B | Round B | Round B | | | Total | Total |
| Athlete | Horse | Event | Penalties | Rank | Penalties | Total | Rank | Penalties | Total | Rank | Penalties | Rank | Penalties | Total | Rank | Penalties | Rank |
| Eiken Sato | Cayak | Individual | 1 | 14 | 24 | 25 | 51 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | 25 | 51 |
| Taizo Sugitani | California | Individual | 0 | =1 | 17 | 17 | 37 Q | 9 | 26 | 37 Q | 12 | 29 | Did not advance | Did not advance | Did not advance | 12 | 29 |
Taizo Sugitani finished qualifying in 37th place which made him a reserve rider for the final. After several qualified horses tested positive for use of capsaicin, he was moved up and participated in Final A.

## Fencing
### Men

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Shogo Nishida | Individual épée | Inostroza (CHI) L 11–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kenta Chida | Individual foil | — | Lau K K (HKG) W 15–6 | Kleibrink (GER) L 10–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuki Ota | Individual foil | — | Souza (BRA) W 15–4 | Choi B-C (KOR) W 15–14 | Joppich (GER) W 15–12 | Sanzo (ITA) W 15–14 | Kleibrink (GER) L 9–15 | |
| Satoshi Ogawa | Individual sabre | Keita (SEN) L 14–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

### Women

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Megumi Harada | Individual épée | — | Parkinson (AUS) W 15–9 | Brânză (ROU) L 11–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Chieko Sugawara | Individual foil | Bye | Jung G-O (KOR) W 11–9 | Golubytskyi (GER) W 6–5 | Nam H-H (KOR) L 10–15 | Did not advance | Did not advance | Did not advance |
| Madoka Hisagae | Individual sabre | Bye | Dyachenko (RUS) L 10–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Field hockey
### Women's tournament
#### Team roster

The following is the Japanese roster in the women's field hockey tournament of the 2008 Summer Olympics.
Head Coach: Yoo Seung-Jin
* Ikuko Okamura (GK)
* Keiko Miura
* Mayumi Ono
* Chie Kimura
* Rika Komazawa
* Miyuki Nakagawa
* Sakae Morimoto
* Kaori Chiba
* Yukari Yamamoto
* Toshie Tsukui
* Sachimi Iwao
* Akemi Kato (c)
* Tomomi Komori
* Misaki Ozawa
* Chinami Kozakura
* Yuka Yoshikawa (GK)
Reserve:
* Hikari Suwa
* Nichika Urata

#### Group play

| Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| Germany | 5 | 4 | 0 | 1 | 12 | 8 | +4 | 12 | Advanced to semifinals |
| Argentina | 5 | 3 | 2 | 0 | 13 | 7 | +6 | 11 | Advanced to semifinals |
| Great Britain | 5 | 2 | 2 | 1 | 7 | 9 | −2 | 8 | |
| United States | 5 | 1 | 3 | 1 | 9 | 8 | +1 | 6 | |
| Japan | 5 | 1 | 1 | 3 | 5 | 7 | −2 | 4 | |
| New Zealand | 5 | 0 | 0 | 5 | 6 | 13 | −7 | 0 | |
* 10 August 2008 08:30
| Japan | 2–1 | New Zealand |
| Morimoto 12' Tsukui 17' | Report | Claxton 25' |
* Umpires: Lee Keum-ju (KOR) Minka Woolley (AUS)
* 12 August 2008 18:00
| United States | 1–1 | Japan |
| Barber 58' | Report | Chiba 12' |
* Umpires: Sarah Garnett (NZL) Lisa Roach (AUS)
* 14 August 2008 18:30
| Japan | 1–2 | Argentina |
| Miura 64' | Report | Gulla 38' Burkart 51' |
* Umpires: Miao Lin (CHN) Gina Spitaleri (ITA)
* 16 August 2008 20:30
| Great Britain | 2–1 | Japan |
| Panter 32' Cullen 70' | Report | Miura 58' |
* Umpires: Minka Woolley (AUS) Carol Metchette (IRL)
* 18 August 2008 08:30
| Germany | 1–0 | Japan |
| Beermann 40' | Report | |
* Umpires: Julie Ashton-Lucy (AUS) Miao Lin (CHN)

#### 9th–10th place

* 20 August 2008 08:30
| South Korea | 2–1 | Japan |
| Park Jeong-sook 12', 49' | Report | Komazawa 43' |
* Umpires: Gina Spitaleri (ITA) Lisa Roach (AUS)

## Football (soccer)
### Men's tournament
#### Roster

The following is the Japan squad in the men's football tournament of the 2008 Summer Olympics.
Head coach: Yasuharu Sorimachi
| No. | Pos. | Player | Date of birth (age) | Caps | Goals | Club |
| 1 | 1GK | Shusaku Nishikawa | (1986-06-18)18 June 1986 (aged 22) | 0 | 0 | Oita Trinita |
| 2 | 3MF | Hajime Hosogai | (1986-06-10)10 June 1986 (aged 22) | 0 | 0 | Urawa Red Diamonds |
| 3 | 2DF | Maya Yoshida | (1988-08-24)24 August 1988 (aged 19) | 0 | 0 | Nagoya Grampus |
| 4 | 2DF | Hiroki Mizumoto (c) | (1985-09-12)12 September 1985 (aged 22) | 1 | 0 | Kyoto Sanga |
| 5 | 2DF | Yuto Nagatomo | (1986-09-12)12 September 1986 (aged 21) | 3 | 0 | FC Tokyo |
| 6 | 2DF | Masato Morishige | (1987-05-21)21 May 1987 (aged 21) | 0 | 0 | Oita Trinita |
| 7 | 2DF | Atsuto Uchida | (1988-03-27)27 March 1988 (aged 20) | 9 | 1 | Kashima Antlers |
| 8 | 3MF | Keisuke Honda | (1986-06-13)13 June 1986 (aged 22) | 1 | 0 | VVV-Venlo |
| 9 | 4FW | Yohei Toyoda | (1985-04-11)11 April 1985 (aged 23) | 0 | 0 | Montedio Yamagata |
| 10 | 3MF | Yohei Kajiyama | (1985-09-24)24 September 1985 (aged 22) | 0 | 0 | FC Tokyo |
| 11 | 4FW | Shinji Okazaki | (1986-04-16)16 April 1986 (aged 22) | 0 | 0 | Shimizu S-Pulse |
| 12 | 3MF | Hiroyuki Taniguchi | (1985-06-27)27 June 1985 (aged 23) | 0 | 0 | Kawasaki Frontale |
| 13 | 2DF | Michihiro Yasuda | (1987-12-20)20 December 1987 (aged 20) | 5 | 0 | Gamba Osaka |
| 14 | 4FW | Shinji Kagawa | (1989-03-17)17 March 1989 (aged 19) | 3 | 0 | Cerezo Osaka |
| 15 | 4FW | Takayuki Morimoto | (1988-05-07)7 May 1988 (aged 20) | 0 | 0 | Catania |
| 16 | 3MF | Takuya Honda | (1985-04-17)17 April 1985 (aged 23) | 0 | 0 | Shimizu S-Pulse |
| 17 | 4FW | Tadanari Lee | (1985-12-19)19 December 1985 (aged 22) | 0 | 0 | Kashiwa Reysol |
| 18 | 1GK | Kaito Yamamoto | (1985-07-10)10 July 1985 (aged 23) | 0 | 0 | Shimizu S-Pulse |
* Over-aged player.

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Nigeria | 3 | 2 | 1 | 0 | 4 | 2 | +2 | 7 | Qualified for the quarterfinals |
| 2 | Netherlands | 3 | 1 | 2 | 0 | 3 | 2 | +1 | 5 | Qualified for the quarterfinals |
| 3 | United States | 3 | 1 | 1 | 1 | 4 | 4 | 0 | 4 | |
| 4 | Japan | 3 | 0 | 0 | 3 | 1 | 4 | −3 | 0 | |

### Women's tournament
#### Roster

Head coach: Norio Sasaki
Japan named a squad of 18 players and 4 alternates for the tournament.
| No. | Pos. | Player | Date of birth (age) | Caps | Goals | Club |
| 1 | 1GK | Miho Fukumoto | (1983-10-02)2 October 1983 (aged 24) | 39 | 0 | Okayama Yunogo Belle |
| 2 | 2DF | Yukari Kinga | (1984-05-02)2 May 1984 (aged 24) | 29 | 0 | NTV Beleza |
| 3 | 2DF | Hiromi Ikeda (captain) | (1975-12-22)22 December 1975 (aged 32) | 112 | 4 | Tasaki Perule |
| 4 | 2DF | Azusa Iwashimizu | (1986-10-14)14 October 1986 (aged 21) | 33 | 5 | NTV Beleza |
| 5 | 3MF | Miyuki Yanagita | (1981-04-11)11 April 1981 (aged 27) | 86 | 11 | Urawa Reds Ladies |
| 6 | 3MF | Tomoe Kato | (1978-05-27)27 May 1978 (aged 30) | 112 | 8 | NTV Beleza |
| 7 | 2DF | Kozue Ando | (1982-07-09)9 July 1982 (aged 26) | 61 | 10 | Urawa Reds Ladies |
| 8 | 3MF | Aya Miyama | (1985-01-28)28 January 1985 (aged 23) | 60 | 18 | Okayama Yunogo Belle |
| 9 | 4FW | Eriko Arakawa | (1979-10-30)30 October 1979 (aged 28) | 62 | 19 | NTV Beleza |
| 10 | 3MF | Homare Sawa | (1978-09-06)6 September 1978 (aged 29) | 136 | 68 | NTV Beleza |
| 11 | 4FW | Shinobu Ohno | (1984-01-23)23 January 1984 (aged 24) | 57 | 22 | NTV Beleza |
| 12 | 4FW | Karina Maruyama | (1983-03-26)26 March 1983 (aged 25) | 50 | 12 | TEPCO Mareeze |
| 13 | 3MF | Ayumi Hara | (1979-02-21)21 February 1979 (aged 29) | 36 | 1 | INAC Leonessa |
| 14 | 2DF | Kyoko Yano | (1984-06-03)3 June 1984 (aged 24) | 44 | 1 | Urawa Reds Ladies |
| 15 | 3MF | Mizuho Sakaguchi | (1987-10-15)15 October 1987 (aged 20) | 21 | 14 | Tasaki Perule |
| 16 | 3MF | Rumi Utsugi | (1988-12-05)5 December 1988 (aged 19) | 23 | 4 | NTV Beleza |
| 17 | 4FW | Yūki Nagasato | (1987-07-15)15 July 1987 (aged 21) | 44 | 25 | NTV Beleza |
| 18 | 1GK | Ayumi Kaihori | (1986-09-04)4 September 1986 (aged 21) | 2 | 0 | INAC Leonessa |

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | United States | 3 | 2 | 0 | 1 | 5 | 2 | +3 | 6 | Qualified for the quarterfinals |
| 2 | Norway | 3 | 2 | 0 | 1 | 4 | 5 | −1 | 6 | Qualified for the quarterfinals |
| 3 | Japan | 3 | 1 | 1 | 1 | 7 | 4 | +3 | 4 | Qualified for the quarterfinals |
| 4 | New Zealand | 3 | 0 | 1 | 2 | 2 | 7 | −5 | 1 | |

#### Final rank

4th place

## Gymnastics
### Artistic
#### Team

| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | PH | R | V | PB | HB | Total | Rank | F | PH | R | V | PB | HB | Total | Rank |
| Takehiro Kashima | Team | — | 14.425 | — | 15.975 | 15.550 | 15.150 | — | — | — | 15.575 | — | 15.200 | — | — | — | — |
| Takuya Nakase | Team | 15.500 | 14.075 | 15.275 | — | 15.725 | 15.450 Q | — | — | 15.000 | — | 15.425 | — | — | 15.525 | — | — |
| Makoto Okiguchi | Team | 15.275 | — | — | 15.750 | — | — | — | — | 15.275 | — | — | — | — | — | — | — |
| Koki Sakamoto | Team | 14.950 | 14.925 | 15.525 | 16.200 | 15.625 | 14.725 | 91.950 | 5* | — | 14.850 | 15.525 | 15.400 | 15.000 | — | — | — |
| Hiroyuki Tomita | Team | 15.175 | 15.175 Q | 15.025 | 15.200 | 15.775 | 15.550 Q | 91.900 | 6 Q | — | 15.150 | 15.950 | — | 16.150 | 15.625 | — | — |
| Kōhei Uchimura | Team | 15.725 | 14.100 | 14.675 | 16.200 | 16.025 | 15.325 | 92.050 | 4 Q | 15.700 | — | — | 16.150 | 15.925 | 15.450 | — | — | — |
| Total | Team | 61.675 | 58.625 | 60.500 | 64.125 | 63.150 | 61.475 | 369.550 | 2 Q | 45.975 | 45.575 | 46.900 | 46.750 | 47.075 | 46.600 | 278.875 | |
*Due to a coaching decision, Hiroyuki Tomita started in the individual all-around final instead of Koki Sakamoto. Tomita had finished qualification in 6th place, but behind his teammates Uchimura and Sakamoto, and no more than two gymnasts from the same nation are allowed in the final.

#### Individual finals

| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | PH | R | V | PB | HB | Total | Rank |
| Takuya Nakase | Horizontal bar | — | — | — | — | — | 15.450 | 15.450 | 5 |
| Koki Sakamoto | All-around | Withdrew due to coaching decision | Withdrew due to coaching decision | Withdrew due to coaching decision | Withdrew due to coaching decision | Withdrew due to coaching decision | Withdrew due to coaching decision | Withdrew due to coaching decision | Withdrew due to coaching decision |
| Hiroyuki Tomita | All-around | 15.100 | 15.425 | 13.850 | 16.200 | 16.000 | 15.675 | 91.750 | 4 |
| Hiroyuki Tomita | Pommel horse | — | 15.375 | — | — | — | — | 15.375 | 5 |
| Hiroyuki Tomita | Horizontal bar | — | — | — | — | — | 15.225 | 15.225 | 6 |
| Kōhei Uchimura | All-around | 15.825 | 13.275 | 15.200 | 16.300 | 15.975 | 15.400 | 91.975 | |
| Kōhei Uchimura | Floor | 15.575 | — | — | — | — | — | 15.575 | 5 |

#### Team

| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | V | UB | BB | Total | Rank | F | V | UB | BB | Total | Rank |
| Mayu Kuroda | Team | — | — | 14.725 | 14.850 | — | — | — | — | 15.350 | 14.725 | — | — |
| Yu Minobe | Team | 13.825 | 14.050 | 14.525 | — | — | — | did not compete | did not compete | did not compete | did not compete | did not compete | did not compete |
| Kyoko Oshima | Team | 14.175 | 14.700 | 14.450 | 14.300 | 57.625 | 27 Q | 14.450 | 14.450 | 14.750 | — | — | — |
| Yuko Shintake | Team | 14.175 | 14.675 | — | 15.050 | — | — | 14.025 | 14.625 | — | 15.000 | — | — |
| Koko Tsurumi | Team | 14.325 | 14.200 | 15.025 | 15.425 | 58.975 | 17 Q | 14.200 | — | 15.425 | 15.225 | — | — |
| Miki Uemura | Team | 12.875 | 14.475 | 12.775 | 14.575 | 54.700 | 50 | — | 14.475 | — | — | — | — |
| Total | Team | 56.500 | 58.050 | 58.725 | 59.900 | 233.175 | 8 Q | 42.675 | 43.550 | 45.525 | 44.950 | 176.700 | 5 |

#### Individual finals

| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | V | UB | BB | Total | Rank |
| Kyoko Oshima | All-around | 14.400 | 14.575 | 14.675 | 14.975 | 57.625 | 20 |
| Koko Tsurumi | All-around | 13.675 | 14.075 | 14.950 | 15.400 | 58.100 | 17 |
| Koko Tsurumi | Balance beam | — | — | — | 14.450 | 14.450 | 8 |
Kyoko Oshima qualified for the All-Around final of the top 24 gymnasts because the number of finalists from the same nation is limited to two. Thus, five gymnasts ranked ahead of her were ineligible. For the same reason, Koko Tsurumi appeared in the balance beam apparatus final.

### Rhythmic

Japan have qualified a rhythmic gymnastics group.
| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final |
| Athlete | Event | 5 ropes | 3 hoops 2 clubs | Total | Rank | 5 ropes | 3 hoops 2 clubs | Total | Rank |
| Yuko Endo Chihana Hara Saori Inagaki Nachi Misawa Kotono Tanaka Honami Tsuboi | Team | 15.425 | 15.425 | 30.850 | 10 | did not advance | did not advance | did not advance | did not advance |

### Trampoline

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Score | Rank | Score | Rank |
| Tetsuya Sotomura | Men's | 70.30 | 5 Q | 39.80 | 4 |
| Yasuhiro Ueyama | Men's | 69.20 | 9 | did not advance | did not advance |
| Haruka Hirota | Women's | 62.60 | 12 | did not advance | did not advance |

## Judo
### Men

| Athlete | Event | Preliminary | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage 1 | Repechage 2 | Repechage 3 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Hiroaki Hiraoka | −60 kg | Bye | Williams-Murray (USA) L 0000–0001 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Masato Uchishiba | −66 kg | Bye | Jimenez (DOM) W 1001–0000 | Miresmaeili (IRI) W 0020–0000 | Sharipov (UZB) W 0201–0010 | Arencibia (CUB) W 0020–0001 | Bye | Bye | Bye | Darbelet (FRA) W 1000–0000 | |
| Yusuke Kanamaru | −73 kg | — | Maloumat (IRI) L 0001–1001 | did not advance | did not advance | did not advance | Pina (POR) W 0011–0010 | Dashdavaa (MGL) W 0100–0000 | van Tichelt (BEL) L 0000–0211 | did not advance | did not advance |
| Takashi Ono | −81 kg | Bye | Camilo (BRA) L 0000–0120 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Hiroshi Izumi | −90 kg | — | Kelly (AUS) W 0010–0000 | Kazusionak (BLR) L 0000–1000 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Keiji Suzuki | −100 kg | — | Naidangiin (MGL) L 0000–1000 | did not advance | did not advance | did not advance | Behrla (GER) L 0000–1000 | did not advance | did not advance | did not advance | did not advance |
| Satoshi Ishii | +100 kg | Bye | Bianchessi (ITA) W 1011–0000 | El Shehaby (EGY) W 1001–0000 | Tmenov (RUS) W 1001–0000 | Gujejiani (GEO) W 1011–0000 | Bye | Bye | Bye | Tangriev (UZB) W 0010–0000 | |

### Women

| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage 1 | Repechage 2 | Repechage 3 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Ryoko Tani | −48 kg | Matsumoto (USA) W 0020–0000 | Wu Sg (CHN) W 0100–0000 | Pareto (ARG) W 0001–0000 | Dumitru (ROU) L 0010–0100 | Bye | Bye | Bye | Bogdanova (RUS) W 1000–0000 | |
| Misato Nakamura | −52 kg | Bye | Tarangul (GER) W 0001–0000 | Heylen (BEL) W 0001–0000 | An K-A (PRK) L 0000–0001 | Bye | Bye | Bye | Kim K-O (KOR) W 0200–0000 | |
| Aiko Sato | −57 kg | Bye | Gasimova (AZE) W 1001–0100 | Xu Y (CHN) L 0002–0010 | Did not advance | Bye | Koivumäki (FIN) W 1011–0000 | Quadros (BRA) L 0000–1000 | did not advance | did not advance |
| Ayumi Tanimoto | −63 kg | Bye | Barreto (VEN) W 1000–0000 | Kong J-Y (KOR) W 1000–0001 | Gonzalez (CUB) W 1011–0000 | Bye | Bye | Bye | Décosse (FRA) W 1000–0000 | |
| Masae Ueno | −70 kg | Park K-Y (KOR) W 1010–0000 | Wang J (CHN) W 1011–0001 | Meszaros (HUN) W 0200–0000 | Bosch (NED) W 0110–0001 | Bye | Bye | Bye | Hernandez (CUB) W 1000–0000 | |
| Sae Nakazawa | −78 kg | Bye | Morico (ITA) L 0001–0010 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Maki Tsukada | +78 kg | Bye | Mondiere (FRA) W 1000–0001 | Zambotti (MEX) W 1000–0000 | Polavder (SLO) W 1010–0000 | Bye | Bye | Bye | Tong W (CHN) L 0010–1001 | |

## Modern pentathlon

| Athlete | Event | Shooting (10 m air pistol) | Shooting (10 m air pistol) | Shooting (10 m air pistol) | Fencing (épée one touch) | Fencing (épée one touch) | Fencing (épée one touch) | Swimming (200 m freestyle) | Swimming (200 m freestyle) | Swimming (200 m freestyle) | Riding (show jumping) | Riding (show jumping) | Riding (show jumping) | Running (3000 m) | Running (3000 m) | Running (3000 m) | Total points | Final rank |
| Athlete | Event | Points | Rank | MP Points | Results | Rank | MP points | Time | Rank | MP points | Penalties | Rank | MP points | Time | Rank | MP Points | Total points | Final rank |
| Yoshihiro Murakami | Men's | 181 | 19 | 1108 | 12–23 | 33 | 688 | 2:10.74 | 31 | 1232 | 220 | 21 | 980 | 10:56.35 | 36 | 736 | 4744 | 31 |

## Rowing
### Men

| Athlete | Event | Heats | Heats | Repechage | Repechage | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank | Time | Rank |
| Daisaku Takeda Kazushige Ura | Lightweight double sculls | 6:24.21 | 4 R | 6:43.03 | 3 SC/D | 6:29.30 | 1 FC | 6:23.02 | 13 |

### Women

| Athlete | Event | Heats | Heats | Repechage | Repechage | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank | Time | Rank |
| Akiko Iwamoto Misaki Kumakura | Lightweight double sculls | 7:05.67 | 3 R | 7:30.92 | 3 SA/B | 7:16.13 | 6 FB | 7:08.49 | 9 |
Qualification Legend: FA=Final A (medal); FB=Final B (non-medal); FC=Final C (non-medal); FD=Final D (non-medal); FE=Final E (non-medal); FF=Final F (non-medal); SA/B=Semifinals A/B; SC/D=Semifinals C/D; SE/F=Semifinals E/F; QF=Quarterfinals; R=Repechage

## Sailing
### Men

| Athlete | Event | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Net points | Final rank |
| Athlete | Event | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | M* | Net points | Final rank |
| Makoto Tomizawa | RS:X | 6 | 20 | 6 | 14 | 7 | 23 | 8 | DSQ | 12 | 2 | 18 | 116 | 10 |
| Yoichi Iijima | Laser | 36 | 32 | 16 | 17 | 31 | BFD | 31 | DNF | 28 | CAN | EL | 235 | 35 |
| Tetsuya Matsunaga Taro Ueno | 470 | 1 | 20 | 24 | 13 | 10 | 14 | 1 | 9 | 21 | 4 | 4 | 97 | 7 |

### Women

| Athlete | Event | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Net points | Final rank |
| Athlete | Event | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | M* | Net points | Final rank |
| Yasuko Kosuge | RS:X | 9 | 12 | 4 | 17 | 14 | 18 | 18 | 11 | 10 | 7 | EL | 102 | 13 |
| Naoko Kamata Ai Kondo | 470 | 13 | 15 | 14 | 15 | 14 | 1 | 12 | 10 | 1 | 13 | EL | 93 | 14 |

### Open

| Athlete | Event | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Net points | Final rank |
| Athlete | Event | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | M* | Net points | Final rank |
| Akira Ishibashi Yukio Makino | 49er | 8 | 17 | 3 | 13 | 8 | 12 | 8 | 9 | 17 | 6 | 14 | 5 | CAN | CAN | CAN | EL | 103 | 12 |
M = Medal race; EL = Eliminated – did not advance into the medal race; CAN = Race cancelled;

## Shooting
### Men

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Susumu Kobayashi | 10 m air pistol | 577 | 23 | did not advance | did not advance |
| Susumu Kobayashi | 50 m pistol | 558 | 10 | did not advance | did not advance |
| Tomoyuki Matsuda | 10 m air pistol | 579 | 19 | did not advance | did not advance |
| Tomoyuki Matsuda | 50 m pistol | 558 | 9 | did not advance | did not advance |
| Toshikazu Yamashita | 10 m air rifle | 590 | 28 | did not advance | did not advance |
| Toshikazu Yamashita | 50 m rifle prone | 593 | 18 | did not advance | did not advance |
| Toshikazu Yamashita | 50 m rifle 3 positions | 1167 | 16 | did not advance | did not advance |

### Women

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Michiko Fukushima | 10 m air pistol | 373 | 38 | did not advance | did not advance |
| Michiko Fukushima | 25 m pistol | 581 | 10 | did not advance | did not advance |
| Yukie Nakayama | Trap | 67 | 6 Q | 86 | 4 |

## Softball

Team roster
* Naho Emoto
* Motoko Fujimoto
* Megu Hirose
* Emi Inui
* Sachiko Ito
* Ayumi Karino
* Satoko Mabuchi
* Yukiyo Mine
* Masumi Mishina
* Rei Nishiyama
* Hiroko Sakai
* Rie Sato
* Mika Someya
* Yukiko Ueno
* Eri Yamada
Preliminary round
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Australia | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 1 |
| Japan | 3 | 1 | 0 | 0 | 0 | 0 | X | 4 | 5 | 1 |
| WP: Yukiko Ueno(1-0) LP: Melanie Roche(0-1) Home runs: AUS: Jodie Bowering(1), Natalie Titcume(1) JPN: Satoko Mabuchi(1) |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Netherlands | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 |
| Japan | 2 | 0 | 0 | 0 | 1 | 0 | X | 3 | 8 | 0 |
| WP: Hiroko Sakai(2-0) LP: Judith van Kampen(0-1) Sv: Naho Emoto(1) |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Japan | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 3 | 2 | 0 |
| China | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 2 |
| WP: Yukiko Ueno(2-0) LP: Wei Lu(1-2) Sv: Hiroko Sakai(1) Home runs: JPN: Rie Sato(1) CHN: None |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Canada | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 3 |
| Japan | 0 | 2 | 2 | 0 | 0 | 2 | 0 | 6 | 9 | 0 |
| WP: Yukiko Ueno(3-0) LP: Lauren Bay(2-2) Sv: Mika Someya(1) |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Japan | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 2 | 9 | 1 |
| Chinese Taipei | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 6 | 1 |
| WP: Hiroko Sakai(1-0) LP: Sheng-Jung Lai(0-1) Home runs: JPN: Satoko Mabuchi(2) TPE: None |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| United States | 4 | 0 | 0 | 3 | 0 | X | X | 7 | 9 | 0 |
| Japan | 0 | 0 | 0 | 0 | 0 | X | X | 0 | 1 | 1 |
| WP: Monica Abbott(1-0) LP: Naho Emoto(0-1) Home runs: USA: Natasha Watley(2), Jessica Mendoza(1,2), Crystl Bustos(3) JPN: None |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Venezuela | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 2 | 7 | 0 |
| Japan | 0 | 0 | 0 | 1 | 4 | 0 | X | 5 | 9 | 0 |
| WP: Hiroko Sakai(3-0) LP: Mariangee Bogado(2-2) Home runs: VEN: None JPN: Satoko Mabuchi(3), Eri Yamada (1) |||||||||||
Group table
| Team | W | L | RS | RA | WIN% | GB | Tiebreaker |
| United States | 7 | 0 | 53 | 1 | 1.000 | - | - |
| Japan | 6 | 1 | 23 | 13 | .857 | 1 | - |
| Australia | 5 | 2 | 30 | 11 | .714 | 2 | - |
| Canada | 3 | 4 | 17 | 23 | .429 | 4 | - |
| Chinese Taipei | 2 | 5 | 10 | 23 | .286 | 5 | 2-0 vs. CHN/VEN |
| China | 2 | 5 | 19 | 21 | .286 | 5 | 1-1 vs. TPE/VEN |
| Venezuela | 2 | 5 | 15 | 35 | .286 | 5 | 0-2 vs. CHN/TPE |
| Netherlands | 1 | 6 | 8 | 48 | .143 | 6 | - |
Semifinal
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| United States | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 6 | 0 |
| Japan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 0 |
| WP: Monica Abbott(3-0) LP: Yukiko Ueno(3-1) Sv: Cat Osterman Home runs: USA: Crystl Bustos(5) JPN: None |||||||||||||
Bronze medal game
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | R | H | E |
| Australia | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 3 | 7 | 2 |
| Japan | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 11 | 1 |
| WP: Yukiko Ueno(4-1) LP: Tanya Harding(3-2) Home runs: AUS: Kerry Wyborn, JPN: Megu Hirose ||||||||||||||||
The winner of this game advanced to the final while the loser won bronze.

## Swimming
### Men

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Takuro Fujii | 100 m butterfly | 51.50 | 7 Q | 51.59 | 7 Q | 51.50 | 6 |
| Takuro Fujii | 200 m individual medley | 1:59.19 | 8 Q | 1:59.59 | 10 | did not advance | did not advance |
| Ryosuke Irie | 200 m backstroke | 1:57.68 | 7 Q | 1:56.35 | 4 Q | 1:55.72 | 5 |
| Masayuki Kishida | 100 m butterfly | 52.45 | 26 | did not advance | did not advance | did not advance | did not advance |
| Kosuke Kitajima | 100 m breaststroke | 59.52 | 2 Q | 59.55 | 2 Q | 58.91 WR | |
| Kosuke Kitajima | 200 m breaststroke | 2:09.89 | 6 Q | 2:08.61 OR | 1 Q | 2:07.64 OR | |
| Takeshi Matsuda | 400 m freestyle | 3:44.99 | 10 | — | — | did not advance | did not advance |
| Takeshi Matsuda | 1500 m freestyle | 15:09.17 | 18 | — | — | did not advance | did not advance |
| Takeshi Matsuda | 200 m butterfly | 1:55.06 | 4 Q | 1:54.02 | 2 Q | 1:52.97 | |
| Junichi Miyashita | 100 m backstroke | 54.12 | 10 Q | 53.69 | 7 Q | 53.99 | 8 |
| Tomomi Morita | 100 m backstroke | 54.21 | 12 Q | 53.95 | 10 | did not advance | did not advance |
| Takashi Nakano | 200 m backstroke | 1:59.59 | 21 | did not advance | did not advance | did not advance | did not advance |
| Yoshihiro Okumura | 200 m freestyle | 1:46.89 | 8 Q | 1:46.44 | 6 Q | 1:47.14 | 7 |
| Hisayoshi Sato | 100 m freestyle | 49.85 | 40 | did not advance | did not advance | did not advance | did not advance |
| Ryuichi Shibata | 200 m butterfly | 1:55.82 | 11 Q | 1:56.17 | 13 | did not advance | did not advance |
| Yuta Suenaga | 100 m breaststroke | 1:00.67 | 13 Q | 1:00.67 | 13 | did not advance | did not advance |
| Yuta Suenaga | 200 m breaststroke | 2:11.30 | =17 | did not advance | did not advance | did not advance | did not advance |
| Ken Takakuwa | 200 m individual medley | 1:58.51 | 4 Q | 1:58.49 | 5 Q | 1:58.22 | 5 |
| Sho Uchida | 200 m freestyle | 1:48.34 | 24 | did not advance | did not advance | did not advance | did not advance |
| Takuro Fujii Masayuki Kishida Yoshihiro Okumura Hisayoshi Sato | 4 × 100 m freestyle relay | 3:17.28 | 14 | — | — | did not advance | did not advance |
| Hisato Matsumoto Yasunori Mononobe Yoshihiro Okumura Sho Uchida | 4 × 200 m freestyle relay | 7:09.12 | 7 Q | — | — | 7:10.31 | 7 |
| Takuro Fujii Kosuke Kitajima Junichi Miyashita Hisayoshi Sato | 4 × 100 m medley relay | 3:32.81 | 3 Q | — | — | 3:31.18 | |

### Women

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Maiko Fujino | 800 m freestyle | 8:35.60 | 21 | — | — | did not advance | did not advance |
| Maiko Fujino | 400 m individual medley | 4:37.35 | 11 | — | — | did not advance | did not advance |
| Saori Haruguchi | 400 m individual medley | 4:45.22 | 27 | — | — | did not advance | did not advance |
| Natsumi Hoshi | 200 m butterfly | 2:07.02 | 6 Q | 2:07.93 | 10 | did not advance | did not advance |
| Hanae Ito | 100 m backstroke | 1:00.16 | 8 Q | 1:00.13 | 7 Q | 1:00.18 | 8 |
| Hanae Ito | 200 m backstroke | 2:10.05 | 14 Q | 2:09.86 | 12 | did not advance | did not advance |
| Rie Kaneto | 200 m breaststroke | 2:24.62 | 5 Q | 2:25.65 | 8 Q | 2:25.14 | 7 |
| Yuka Kato | 100 m butterfly | 58.94 | 23 | did not advance | did not advance | did not advance | did not advance |
| Asami Kitagawa | 100 m breaststroke | 1:08.36 | 15 Q | 1:08.23 | 5 Q | 1:08.43 | 8 |
| Asami Kitagawa | 200 m individual medley | 2:12.47 | =9 Q | 2:12.18 | =8 WSO | 2:11.56 | 6 |
| Maki Mita | 200 m freestyle | 1:59.96 | 21 | did not advance | did not advance | did not advance | did not advance |
| Reiko Nakamura | 100 m backstroke | 59.36 | 2 Q | 59.64 | 3 Q | 59.72 | 6 |
| Reiko Nakamura | 200 m backstroke | 2:09.77 | 12 Q | 2:08.21 | 4 Q | 2:07.13 | |
| Yuko Nakanishi | 100 m butterfly | 58.61 | =18 | did not advance | did not advance | did not advance | did not advance |
| Yuko Nakanishi | 200 m butterfly | 2:06.62 | 3 Q | 2:06.96 | 5 Q | 2:07.32 | 5 |
| Ai Shibata | 400 m freestyle | 4:17.96 | 31 | — | — | did not advance | did not advance |
| Ai Shibata | 800 m freestyle | 8:41.63 | 27 | — | — | did not advance | did not advance |
| Megumi Taneda | 100 m breaststroke | 1:08.45 | 17 | did not advance | did not advance | did not advance | did not advance |
| Megumi Taneda | 200 m breaststroke | 2:24.75 | 6 Q | 2:25.42 | 7 Q | 2:25.23 | 8 |
| Haruka Ueda | 200 m freestyle | 1:57.64 | 8 Q | 1:58.44 | 13 | did not advance | did not advance |
| Asami Kitagawa Maki Mita Haruka Ueda Misaki Yamaguchi | 4 × 100 m freestyle relay | 3:39.25 | 9 | — | — | did not advance | did not advance |
| Maki Mita Emi Takanabe Haruka Ueda Misaki Yamaguchi | 4 × 200 m freestyle relay | 7:55.63 | 8 Q | — | — | 7:57.56 | 7 |
| Hanae Ito* Yuka Kato Asami Kitagawa Reiko Nakamura Haruka Ueda | 4 × 100 m medley relay | 3:59.91 | 6 Q | — | — | 3:59.54 | 6 |
* Competed in heats only; WSO - Win swim-off; LSO - Lost swim-off

## Synchronized swimming

| Athlete | Event | Technical routine | Technical routine | Free routine (preliminary) | Free routine (preliminary) | Free routine (preliminary) | Free routine (final) | Free routine (final) | Free routine (final) |
| Athlete | Event | Points | Rank | Points | Total (technical + free) | Rank | Points | Total (technical + free) | Rank |
| Saho Harada Emiko Suzuki | Duet | 48.250 | 3 | 48.500 | 96.750 | 3 Q | 48.917 | 97.167 | |
| Ai Aoki Saho Harada Yumiko Ishiguro Naoko Kawashima Hiromi Kobayashi Erika Komura Ayako Matsumura Emiko Suzuki Masako Tachibana | Team | 48.167 | 4 | — | — | — | 47.167 | 95.334 | 5 |

## Table tennis
### Men's singles

| Athlete | Event | Preliminary round | Round 1 | Round 2 | Round 3 | Round 4 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Yo Kan | Singles | Bye | Bye | Bye | Smirnov (RUS) W 4–1 | Wang H (CHN) L 1–4 | did not advance | did not advance | did not advance | did not advance |
| Seiya Kishikawa | Singles | Bye | Zhang P (CAN) W 4–2 | Tan Rw (CRO) L 1–4 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Jun Mizutani | Singles | Bye | Bye | Éloi (FRA) W 4–3 | Kreanga (GRE) L 1–4 | did not advance | did not advance | did not advance | did not advance | did not advance |

### Women's singles

| Athlete | Event | Preliminary round | Round 1 | Round 2 | Round 3 | Round 4 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Ai Fukuhara | Singles | Bye | Bye | Bye | Hu (TUR) W 4–1 | Zhang Yn (CHN) L 1–4 | did not advance | did not advance | did not advance | did not advance |
| Haruna Fukuoka | Singles | Bye | Bye | Komwong (THA) W 4–0 | Kim K-A (KOR) L 2–4 | did not advance | did not advance | did not advance | did not advance | did not advance |
| Sayaka Hirano | Singles | Bye | Bye | Bye | Gao J (USA) L 1–4 | did not advance | did not advance | did not advance | did not advance | did not advance |

### Team

| Athlete | Event | Group round | Group round | Semifinals | Bronze playoff 1 | Bronze playoff 2 | Bronze medal | Final | Final |
| Athlete | Event | Opposition Result | Rank | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Yo Kan Seiya Kishikawa Jun Mizutani | Men's team | Group D Hong Kong (HKG) W 3 – 0 Nigeria (NGR) W 3 – 0 Russia (RUS) W 3 – 0 | 1 Q | Germany (GER) L 2 – 3 | Bye | Austria (AUT) L 1 – 3 | did not advance | did not advance | did not advance |
| Ai Fukuhara Haruna Fukuoka Sayaka Hirano | Women's team | Group D South Korea (KOR) L 0 – 3 Spain (ESP) W 3 – 2 Australia (AUS) W 3 – 0 | 2 | Did not advance | Austria (AUT) W 3 – 0 | Hong Kong (HKG) W 3 – 2 | South Korea (KOR) L 0 – 3 | Did not advance | 4 |

## Taekwondo

| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Repechage | Bronze Medal | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Yoriko Okamoto | Women's −67 kg | Benabderrassoul (MAR) L 0–2 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |

## Tennis

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kei Nishikori | Men's singles | Schüttler (GER) L 4–6, 7–6$^{(7–5)}$, 3–6 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Ayumi Morita | Women's singles | Erakovic (NZL) W 5–7, 7–6$^{(9–7)}$, 6–4 | Li N (CHN) L 2–6, 5–7 | did not advance | did not advance | did not advance | did not advance | did not advance |
| Ai Sugiyama | Women's singles | Hantuchová (SVK) L 2–6, 5–7 | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance |
| Ayumi Morita Ai Sugiyama | Women's doubles | — | Arn / Szávay (HUN) W 6–3, 6–3 | S Williams / V Williams (USA) L 5–7, 2–6 | did not advance | did not advance | did not advance | did not advance |

## Triathlon

| Athlete | Event | Swim (1.5 km) | Trans 1 | Bike (40 km) | Trans 2 | Run (10 km) | Total Time | Rank |
| Hirokatsu Tayama | Men's | 18:04 | 0:30 | 59:12 | 0:29 | 37:58 | 1:56:13.68 | 48 |
| Ryosuke Yamamoto | Men's | 18:27 | 0:26 | 58:53 | 0:29 | 33:56 | 1:52:11.98 | 30 |
| Juri Ide | Women's | 19:50 | 0:29 | 1:04:24 | 0:35 | 35:05 | 2:00:23.77 | 5 |
| Kiyomi Niwata | Women's | 19:56 | 0:34 | 1:04:14 | 0:31 | 35:36 | 2:00:51.85 | 9 |
| Ai Ueda | Women's | 20:17 | 0:29 | 1:03:56 | 0:28 | 37:09 | 2:02:19.09 | 17 |

## Volleyball
### Beach

| Athlete | Event | Preliminary round | Standing | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Standing | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kentaro Asahi Katsuhiro Shiratori | Men's | Pool F Brink – Dieckmann (GER) L 0 – 2 (18–21, 18–21) Boersma – Ronnes (NED) W 2 – 1 (21–15, 23–25, 15–11) Gibb – Rosenthal (USA) L 1 – 2 (15–21, 21–19, 16–18) | 2 Q | Araújo – Luiz (BRA) L 0 – 2 (21–23, 15–21) | did not advance | did not advance | did not advance | did not advance |
| Chiaki Kusuhara Mika Teru Saiki | Women's | Pool B Walsh – May-Treanor (USA) L 0 – 2 (12–21, 15–21) Håkedal – Torlen (NOR) L 0 – 2 (8–21, 18–21) Grasset – Peraza (CUB) L 0 – 2 (18–21, 17–21) | 4 | did not advance | did not advance | did not advance | did not advance | did not advance |

### Indoor

Japan qualified teams in both the men's and women's tournaments. The men's team lost all five matches in the group play, finishing last in their group, and failing to qualify for the final round. The men's final ranking was tied for 11th place. The women's team won two of the matches in the group play, and advanced to the quarterfinals, where they lost to Brazil. The women's final ranking was tied for 5th place.

#### Men's tournament
##### Roster

The following is the Japanese roster in the men's volleyball tournament of the 2008 Summer Olympics.
Head Coach: Tatsuya Ueta
| № | Name | Date of birth | Height | Weight | Spike | Block | 2008 club |
| 1 | Nobuharu Saito | 29 September 1973 | 2.05 m (6 ft 9 in) | 95 kg (209 lb) | 345 cm (136 in) | 330 cm (130 in) | Toray Arrows |
| 5 | Daisuke Usami | 29 March 1979 | 1.83 m (6 ft 0 in) | 83 kg (183 lb) | 330 cm (130 in) | 320 cm (130 in) | Panasonic Panthers |
| 7 | Takahiro Yamamoto | 12 July 1978 | 2.01 m (6 ft 7 in) | 90 kg (200 lb) | 345 cm (136 in) | 331 cm (130 in) | Panasonic Panthers |
| 8 | Masaji Ogino (c) | 8 January 1970 | 1.97 m (6 ft 6 in) | 98 kg (216 lb) | 340 cm (130 in) | 320 cm (130 in) | Suntory Sunbirds |
| 11 | Yoshihiko Matsumoto | 7 January 1981 | 1.93 m (6 ft 4 in) | 80 kg (180 lb) | 358 cm (141 in) | 340 cm (130 in) | NEC Blue Rockets |
| 12 | Kota Yamamura | 20 October 1980 | 2.05 m (6 ft 9 in) | 95 kg (209 lb) | 350 cm (140 in) | 340 cm (130 in) | Suntory Sunbirds |
| 13 | Kunihiro Shimizu | 11 August 1986 | 1.94 m (6 ft 4 in) | 95 kg (209 lb) | 345 cm (136 in) | 320 cm (130 in) | Tokai University |
| 14 | Tatsuya Fukuzawa | 1 July 1986 | 1.89 m (6 ft 2 in) | 84 kg (185 lb) | 355 cm (140 in) | 330 cm (130 in) | Chuo University |
| 15 | Katsutoshi Tsumagari (L) | 2 November 1975 | 1.83 m (6 ft 0 in) | 78 kg (172 lb) | 320 cm (130 in) | 305 cm (120 in) | Suntory Sunbirds |
| 16 | Yusuke Ishijima | 9 January 1984 | 1.97 m (6 ft 6 in) | 100 kg (220 lb) | 345 cm (136 in) | 335 cm (132 in) | Osaka Blazers Sakai |
| 17 | Yu Koshikawa | 30 June 1984 | 1.90 m (6 ft 3 in) | 87 kg (192 lb) | 348 cm (137 in) | 335 cm (132 in) | Suntory Sunbirds |
| 18 | Kosuke Tomonaga | 22 July 1980 | 1.84 m (6 ft 0 in) | 83 kg (183 lb) | 320 cm (130 in) | 310 cm (120 in) | Osaka Blazers Sakai |

##### Group play

| Pos | Teamvte | Pld | W | L | Pts | SPW | SPL | SPR | SW | SL | SR | Qualification |
| 1 | United States | 5 | 5 | 0 | 10 | 460 | 371 | 1.240 | 15 | 4 | 3.750 | Quarterfinals |
| 2 | Italy | 5 | 4 | 1 | 9 | 439 | 401 | 1.095 | 13 | 6 | 2.167 | Quarterfinals |
| 3 | Bulgaria | 5 | 3 | 2 | 8 | 446 | 440 | 1.014 | 10 | 9 | 1.111 | Quarterfinals |
| 4 | China | 5 | 2 | 3 | 7 | 445 | 492 | 0.904 | 9 | 13 | 0.692 | Quarterfinals |
| 5 | Venezuela | 5 | 1 | 4 | 6 | 421 | 451 | 0.933 | 8 | 12 | 0.667 | |
| 6 | Japan | 5 | 0 | 5 | 5 | 392 | 448 | 0.875 | 4 | 15 | 0.267 | |

#### Women's tournament
##### Roster

The following is the Japanese roster in the women's volleyball tournament of the 2008 Summer Olympics.
Head Coach: Shoichi Yanagimoto
| № | Name | Date of birth | Height | Weight | Spike | Block | 2008 club |
| 1 | Megumi Kurihara | 31 July 1984 | 1.88 m (6 ft 2 in) | 69 kg (152 lb) | 305 cm (120 in) | 285 cm (112 in) | Pioneer Red Wings |
| 2 | Asako Tajimi | 26 June 1972 | 1.80 m (5 ft 11 in) | 70 kg (150 lb) | 309 cm (122 in) | 304 cm (120 in) | Pioneer Red Wings |
| 3 | Yoshie Takeshita (C) | 18 March 1978 | 1.59 m (5 ft 3 in) | 52 kg (115 lb) | 280 cm (110 in) | 270 cm (110 in) | JT Marvelous |
| 4 | Kanako Omura | 15 December 1976 | 1.84 m (6 ft 0 in) | 70 kg (150 lb) | 319 cm (126 in) | 310 cm (120 in) | Hisamitsu Springs |
| 5 | Miyuki Takahashi | 25 December 1978 | 1.70 m (5 ft 7 in) | 65 kg (143 lb) | 290 cm (110 in) | 285 cm (112 in) | NEC Red Rockets |
| 6 | Yuko Sano (L) | 26 July 1979 | 1.59 m (5 ft 3 in) | 54 kg (119 lb) | 260 cm (100 in) | 250 cm (98 in) | Hisamitsu Springs |
| 7 | Sachiko Sugiyama | 19 October 1979 | 1.84 m (6 ft 0 in) | 66 kg (146 lb) | 310 cm (120 in) | 305 cm (120 in) | NEC Red Rockets |
| 8 | Yuka Sakurai | 2 September 1974 | 1.67 m (5 ft 6 in) | 63 kg (139 lb) | 290 cm (110 in) | 275 cm (108 in) | Denso Airybees |
| 9 | Miyuki Kano | 17 May 1977 | 1.74 m (5 ft 9 in) | 65 kg (143 lb) | 298 cm (117 in) | 275 cm (108 in) | Hisamitsu Springs |
| 11 | Erika Araki | 3 August 1984 | 1.86 m (6 ft 1 in) | 79 kg (174 lb) | 307 cm (121 in) | 298 cm (117 in) | Toray Arrows |
| 12 | Saori Kimura | 19 August 1986 | 1.85 m (6 ft 1 in) | 66 kg (146 lb) | 298 cm (117 in) | 293 cm (115 in) | Toray Arrows |
| 14 | Yuki Kawai | 22 January 1990 | 1.68 m (5 ft 6 in) | 63 kg (139 lb) | 280 cm (110 in) | 275 cm (108 in) | JT Marvelous |

##### Group play

| Pos | Teamvte | Pld | W | L | Pts | SPW | SPL | SPR | SW | SL | SR | Qualification |
| 1 | Cuba | 5 | 5 | 0 | 10 | 426 | 371 | 1.148 | 15 | 3 | 5.000 | Quarterfinals |
| 2 | United States | 5 | 4 | 1 | 9 | 459 | 441 | 1.041 | 12 | 9 | 1.333 | Quarterfinals |
| 3 | China | 5 | 3 | 2 | 8 | 467 | 395 | 1.182 | 13 | 7 | 1.857 | Quarterfinals |
| 4 | Japan | 5 | 2 | 3 | 7 | 381 | 389 | 0.979 | 7 | 11 | 0.636 | Quarterfinals |
| 5 | Poland | 5 | 1 | 4 | 6 | 441 | 445 | 0.991 | 9 | 12 | 0.750 | |
| 6 | Venezuela | 5 | 0 | 5 | 5 | 262 | 395 | 0.663 | 1 | 15 | 0.067 | |

##### Quarterfinal
## Weightlifting

| Athlete | Event | Snatch | Snatch | Clean & Jerk | Clean & Jerk | Total | Rank |
| Athlete | Event | Result | Rank | Result | Rank | Total | Rank |
| Yasunobu Sekikawa | Men's −56 kg | 114 | 12 | 142 | 11 | 256 | 11 |
| Masaharu Yamada | Men's −56 kg | 106 | 17 | 153 | 6 | 259 | 9 |
| Yoshito Shintani | Men's −69 kg | 135 | 15 | 175 | 8 | 310 | 10 |
| Hiromi Miyake | Women's −48 kg | 80 | 4 | 105 | 4 | 185 | 4 | IOC document moved up from 6th to 4th on November 6, 2018 |
| Misaki Oshiro | Women's −48 kg | 80 | 6 | 92 | 6 | 172 | 6 | IOC document moved up from 8th to 6th on November 6, 2018 |
| Rika Saito | Women's −69 kg | 87 | 7 | 122 | 5 | 209 | 6 | IOC document moved up from 8th to 6th on November 6, 2018 |

## Wrestling

Japan has qualified in the following quota places.
Key:
* VT - Victory by Fall.
* PP - Decision by Points - the loser with technical points.
* PO - Decision by Points - the loser without technical points.

### Men's freestyle

| Athlete | Event | Qualification | Round of 16 | Quarterfinal | Semifinal | Repechage 1 | Repechage 2 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Tomohiro Matsunaga | −55 kg | Diatta (SEN) W 5–0 $^{VT}$ | Akgul (TUR) W 3–0 $^{PO}$ | Mansurov (UZB) W 3–1 $^{PP}$ | Kudukhov (RUS) W 5–0 $^{VT}$ | Bye | Bye | Cejudo (USA) L 0–3 $^{PO}$ | |
| Kenichi Yumoto | −60 kg | Bye | Korjakin (TJK) W 5–0 $^{VT}$ | Dutt (IND) W 3–1 $^{PP}$ | Fedoryshyn (UKR) L 1–3 $^{PP}$ | Bye | Bye | Bazarguruev (KGZ) W 3–0 $^{PO}$ | |
| Kazuhiko Ikematsu | −66 kg | Bye | Tushishvili (GEO) L 1–3 $^{PP}$ | did not advance | did not advance | did not advance | did not advance | did not advance | 13 |

### Men's Greco-Roman

| Athlete | Event | Qualification | Round of 16 | Quarterfinal | Semifinal | Repechage 1 | Repechage 2 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Makoto Sasamoto | −60 kg | Mnatsakanyan (ARM) W 3–1 $^{PP}$ | Nazaryan (BUL) L 1–3 $^{PP}$ | did not advance | did not advance | did not advance | did not advance | did not advance | 10 |
| Shingo Matsumoto | −84 kg | Forov (ARM) L 1–3 $^{PP}$ | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | 15 |
| Kenzo Kato | −96 kg | Timoncini (ITA) L 0–3 $^{PO}$ | did not advance | did not advance | did not advance | did not advance | did not advance | did not advance | 19 |

### Women's freestyle

| Athlete | Event | Qualification | Round of 16 | Quarterfinal | Semifinal | Repechage 1 | Repechage 2 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Chiharu Icho | −48 kg | Bye | Li Xm (CHN) W 3–1 $^{PP}$ | Merleni (UKR) W 5–0 $^{VT}$ | Chun (USA) W 3–1 $^{PP}$ | Bye | Bye | Huynh (CAN) L 1–3 $^{PP}$ | |
| Saori Yoshida | −55 kg | — | Nerell (SWE) W 3–1 $^{PP}$ | Golts (RUS) W 3–0 $^{PO}$ | Verbeek (CAN) W 3–0 $^{PO}$ | Bye | Bye | Xu L (CHN) W 5–0 $^{VT}$ | |
| Kaori Icho | −63 kg | Bye | Zamula (AZE) W 5–0 $^{VT}$ | Miller (USA) W 5–0 $^{VT}$ | Dugrenier (CAN) W 3–1 $^{PP}$ | Bye | Bye | Kartashova (RUS) W 3–0 $^{PO}$ | |
| Kyoko Hamaguchi | −72 kg | — | Perepelkina (RUS) W 3–1 $^{PP}$ | Conceição (BRA) W 5–0 $^{VT}$ | Wang J (CHN) L 0–5 $^{VT}$ | Bye | Bye | Bernard (USA) W 3–1 $^{PP}$ | |