# Japan at the 2004 Summer Olympics

Japan competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. Japanese athletes have competed at every Summer Olympic Games in the modern era since 1912 except for two editions; it was not invited to the 1948 Summer Olympics in London for its role in World War II, and was also part of the US-led boycott of the 1980 Summer Olympics in Moscow. The Japanese Olympic Committee sent a total of 306 athletes, 139 men and 167 women, to compete in 27 sports. For the first time in its Olympic history, Japan was represented by more female than male athletes.
Japan left Athens with a total of 37 medals (16 gold, 9 silver, and 12 bronze), finishing fifth in the overall medal rankings. This was also the nation's most successful Olympics, winning the largest number of gold and overall medals in non-boycotting games and surpassing three gold medals short of the 1956 Summer Olympics in Melbourne. Ten of these medals were awarded to the athletes in judo, eight in swimming, six in wrestling, four in gymnastics, and two each in athletics and synchronized swimming. Eight Japanese athletes won more than a single Olympic medal in Athens. Japan's team-based athletes came strong and successful in Athens, as the baseball and softball teams managed to produce two bronze medals.
Among the nation's medalists were freestyle wrestlers Saori Yoshida and Kaori Icho, who both claimed their gold medals in women's wrestling for the first time, and judoka Tadahiro Nomura and Ryoko Tani, who both successfully defended Olympic titles in their respective classes. Swimmer Kosuke Kitajima became the most successful Japanese athlete in these games, striking a breaststroke double with two golds and adding a bronze to his career hardware for the team in men's medley relay. Meanwhile, synchronized swimmers Miya Tachibana and Miho Takeda managed to repeat their silver medals from Sydney in both women's duet and team routines. Takehiro Kashima, Hiroyuki Tomita, and Isao Yoneda claimed two individual medals each in men's artistic gymnastics, including their coveted gold in the team all-around.
On August 29, 2004, the International Olympic Committee stripped off Hungary's Adrián Annus hammer throw title after failing the doping test, and the gold medal was subsequently awarded to Koji Murofushi at the conclusion of the Games, making him the nation's first ever Olympic champion in the field event.

## Medalists

| Medal | Name | Sport | Event | Date |
| Gold | Tadahiro Nomura | Judo | Men's 60 kg | August 14 |
| Gold | Ryoko Tani | Judo | Women's 48 kg | August 14 |
| Gold | Masato Uchishiba | Judo | Men's 66 kg | August 15 |
| Gold | Kosuke Kitajima | Swimming | Men's 100 m breaststroke | August 15 |
| Gold | Takehiro Kashima Hisashi Mizutori Daisuke Nakano Hiroyuki Tomita Naoya Tsukahara Isao Yoneda | Gymnastics | Men's artistic team all-around | August 16 |
| Gold | Ayumi Tanimoto | Judo | Women's 63 kg | August 17 |
| Gold | Masae Ueno | Judo | Women's 70 kg | August 18 |
| Gold | Kosuke Kitajima | Swimming | Men's 200 m breaststroke | August 18 |
| Gold | Noriko Anno | Judo | Women's 78 kg | August 19 |
| Gold | Keiji Suzuki | Judo | Men's +100 kg | August 20 |
| Gold | Maki Tsukada | Judo | Women's +78 kg | August 20 |
| Gold | Ai Shibata | Swimming | Women's 800 m freestyle | August 20 |
| Gold | Koji Murofushi | Athletics | Men's hammer throw | August 22 |
| Gold | Mizuki Noguchi | Athletics | Women's marathon | August 22 |
| Gold | Saori Yoshida | Wrestling | Women's freestyle 55 kg | August 23 |
| Gold | Kaori Icho | Wrestling | Women's freestyle 63 kg | August 23 |
| Silver | Yuki Yokosawa | Judo | Women's 52 kg | August 15 |
| Silver | Takashi Yamamoto | Swimming | Men's 200 m butterfly | August 17 |
| Silver | Hiroshi Izumi | Judo | Men's 90 kg | August 18 |
| Silver | Hiroshi Yamamoto | Archery | Men's individual | August 19 |
| Silver | Toshiaki Fushimi Masaki Inoue Tomohiro Nagatsuka | Cycling | Men's team sprint | August 21 |
| Silver | Hiroyuki Tomita | Gymnastics | Men's parallel bars | August 23 |
| Silver | Chiharu Icho | Wrestling | Women's freestyle 48 kg | August 23 |
| Silver | Miya Tachibana Miho Takeda | Synchronized swimming | Women's duet | August 25 |
| Silver | Michiyo Fujimaru Saho Harada Naoko Kawashima Kanako Kitao Emiko Suzuki Miya Tachibana Miho Takeda Juri Tatsumi Yoko Yoneda | Synchronized swimming | Women's team | August 27 |
| Bronze | Tomomi Morita | Swimming | Men's 100 m backstroke | August 16 |
| Bronze | Yuko Nakanishi | Swimming | Women's 200 m butterfly | August 18 |
| Bronze | Reiko Nakamura | Swimming | Women's 200 m backstroke | August 20 |
| Bronze | Kosuke Kitajima Tomomi Morita Yoshihiro Okumura Takashi Yamamoto | Swimming | Men's 4 × 100 m medley relay | August 21 |
| Bronze | Takehiro Kashima | Gymnastics | Men's pommel horse | August 22 |
| Bronze | Emi Inui Kazue Ito Yumi Iwabuchi Masumi Mishina Emi Naito Haruka Saito Hiroko Sakai Naoko Sakamoto Rie Sato Yuki Sato Juri Takayama Yukiko Ueno Reika Utsugi Eri Yamada Noriko Yamaji | Softball | Women's tournament | August 23 |
| Bronze | Isao Yoneda | Gymnastics | Men's horizontal bar | August 23 |
| Bronze | Kyoko Hamaguchi | Wrestling | Women's freestyle 72 kg | August 23 |
| Bronze | Ryoji Aikawa Yuya Ando Kosuke Fukudome Hisashi Iwakuma Hitoki Iwase Kenji Jojima Makoto Kaneko Takuya Kimura Masahide Kobayashi Hiroki Kuroda Daisuke Matsuzaka Daisuke Miura Shinya Miyamoto Arihito Muramatsu Norihiro Nakamura Michihiro Ogasawara Naoyuki Shimizu Yoshinobu Takahashi Yoshitomo Tani Koji Uehara Kazuhiro Wada Tsuyoshi Wada | Baseball | Men's tournament | August 25 |
| Bronze | Kazuto Seki Kenjiro Todoroki | Sailing | Men's 470 class | August 28 |
| Bronze | Chikara Tanabe | Wrestling | Men's freestyle 55 kg | August 28 |
| Bronze | Kenji Inoue | Wrestling | Men's freestyle 60 kg | August 29 |
Medals by sport :
| Sport | | | | Total |
| Judo | 8 | 2 | 0 | 10 |
| Swimming | 3 | 1 | 4 | 8 |
| Wrestling | 2 | 1 | 3 | 6 |
| Athletics | 2 | 0 | 0 | 2 |
| Gymnastics | 1 | 1 | 2 | 4 |
| Synchronized swimming | 0 | 2 | 0 | 2 |
| Archery | 0 | 1 | 0 | 1 |
| Cycling | 0 | 1 | 0 | 1 |
| Baseball | 0 | 0 | 1 | 1 |
| Sailing | 0 | 0 | 1 | 1 |
| Softball | 0 | 0 | 1 | 1 |
| Total | 16 | 9 | 12 | 37 |

## Archery

Three Japanese archers qualified each for the men's and women's individual archery, and a spot each for both men's and women's teams.

### 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 | 646 | 37 | Yong Fj (CHN) W 146–143 | Jang Y-H (KOR) L 163–166 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuji Hamano | Individual | 660 | 17 | Prasad (IND) L 150–155 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Hiroshi Yamamoto | Individual | 664 | 9 | Fisseux (FRA) W 155-147 | Frangilli (ITA) W 162–154 | Serdyuk (UKR) W 168–160 | Im D-H (KOR) W 111–110 | Cuddihy (AUS) W 115 (10–115) (9) | Galiazzo (ITA) L 109–111 | |
| Takaharu Furukawa Yuji Hamano Hiroshi Yamamoto | Team | 1970 | 5 | — | — | France (FRA) W 254–241 | Ukraine (UKR) L 236–242 | 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 |
| Yukari Kawasaki | Individual | 622 | 37 | Marcinkiewicz (POL) L 106–119 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Sayoko Kawauchi | Individual | 601 | 53 | Burdeyna (UKR) W 137–129 | Williamson (GBR) L 150–154 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Sayami Matsushita | Individual | 624 | 35 | Fouace (FRA) W 165–157 | Yun M-J (KOR) L 149–173 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Yukari Kawasaki Sayoko Kawauchi Sayami Matsushita | Team | 1847 | 14 | — | — | Chinese Taipei (TPE) L 226–240 | Did not advance | Did not advance | Did not advance | Did not advance |

## Athletics

Japanese athletes have so far achieved qualifying standards in the following athletics events (up to a maximum of 3 athletes in each event at the 'A' Standard, and 1 at the 'B' Standard). The team was selected based on the results of the 2004 Japan Championships in Athletics.
Koji Murofushi originally claimed a silver medal in men's hammer throw. On August 29, 2004, the International Olympic Committee stripped off Hungary's Adrián Annus hammer throw title after failing the doping test. Following the announcement of Annus' disqualification, Murofushi's medal was eventually upgraded to gold.

### 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 |
| Shigeru Aburaya | Marathon | — | — | — | — | — | — | 2:13:11 | 5 |
| Nobuharu Asahara | 100 m | 10.33 | 1 Q | 10.24 | 4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Tomoaki Kunichika | Marathon | — | — | — | — | — | — | 2:21:13 | 42 |
| Ryo Matsuda | 200 m | 24.59 | 8 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Masato Naito | 110 m hurdles | 13.56 | 5 q | 13.54 | 6 | Did not advance | Did not advance | Did not advance | Did not advance |
| Ryuji Ono | 10000 m | — | — | — | — | — | — | 29:06.50 | 19 |
| Ryuji Ono | 3000 m steeplechase | 8:29.07 | 6 | — | — | — | — | Did not advance | Did not advance |
| Jun Osakada | 400 m | 46.39 | 5 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Mitsuhiro Sato | 400 m | 46.70 | 6 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Shingo Suetsugu | 100 m | 10.27 | 3 Q | 10.19 | 5 | Did not advance | Did not advance | Did not advance | Did not advance |
| Toshinari Suwa | Marathon | — | — | — | — | — | — | 2:13:24 | 6 |
| Shinji Takahira | 200 m | 21.05 | 6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Dai Tamesue | 400 m hurdles | 48.80 | 3 Q | — | — | 48.46 | 3 | Did not advance | Did not advance |
| Satoru Tanigawa | 110 m hurdles | 13.39 NR | 3 Q | 13.70 | 7 | Did not advance | Did not advance | Did not advance | Did not advance |
| Takayuki Tanii | 20 km walk | — | — | — | — | — | — | 1:23:38 | 15 |
| Takayuki Tanii | 50 km walk | — | — | — | — | — | — | DSQ | DSQ |
| Hiroyasu Tsuchie | 100 m | 10.37 | 5 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuki Yamaguchi | 400 m | 46.16 | 5 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Ken Yoshizawa | 400 m hurdles | 50.95 | 6 | — | — | Did not advance | Did not advance | Did not advance | Did not advance |
| Yuki Yamazaki | 20 km walk | — | — | — | — | — | — | DNF | DNF |
| Yuki Yamazaki | 50 km walk | — | — | — | — | — | — | 3:57:00 | 16 |
| Nobuharu Asahara Shingo Suetsugu Shinji Takahira Hiroyasu Tsuchie | 4 × 100 m relay | 38.53 | 5 q | — | — | — | — | 38.49 | 4 |
| Tomohiro Ito Jun Osakada Mitsuhiro Sato Yuki Yamaguchi | 4 × 400 m relay | 3:02.71 | 2 Q | — | — | — | — | 3:00.99 | 4 |

### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Yukifumi Murakami | Javelin throw | 78.59 | 18 | Did not advance | Did not advance |
| Koji Murofushi | Hammer throw | 79.55 | 3 Q | 82.91 | |
| Daichi Sawano | Pole vault | 5.70 | 15 Q | 5.55 | =13 |
| Takanori Sugibayashi | Triple jump | 15.95 | 38 | Did not advance | Did not advance |
| Shinichi Terano | Long jump | 7.70 | 29 | Did not advance | Did not advance |

### Track & road events

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank |
| Kayoko Fukushi | 10000 m | — | — | — | — | 33:48.66 | 26 |
| Harumi Hiroyama | 10000 m | — | — | — | — | 32:15.12 | 18 |
| Mayumi Kawasaki | 20 km walk | — | — | — | — | 1:37:56 | 40 |
| Mizuki Noguchi | Marathon | — | — | — | — | 2:26:20 | |
| Megumi Oshima | 10000 m | — | — | — | — | 31:42.18 | 13 |
| Naoko Sakamoto | Marathon | — | — | — | — | 2:31:43 | 7 |
| Miho Sugimori | 800 m | 2:02.82 | 6 | Did not advance | Did not advance | Did not advance | Did not advance |
| Reiko Tosa | Marathon | — | — | — | — | 2:28:44 | 5 |

### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Maho Hanaoka | Long jump | 6.31 | 34 | Did not advance | Did not advance |
| Takayo Kondo | Pole vault | 4.15 | 32 | Did not advance | Did not advance |
| Chinatsu Mori | Shot put | 15.86 | 31 | Did not advance | Did not advance |
| Yuka Murofushi | Hammer throw | 65.33 | 27 | Did not advance | Did not advance |

### Combined events – Heptathlon

| Athlete | Event | 100H | HJ | SP | 200 m | LJ | JT | 800 m | Final | Rank |
| Yuki Nakata | Result | 13.94 | 1.76 | 11.54 | 25.76 | NM | 39.75 | 2:18.46 | 4871 | 28 |
| Yuki Nakata | Points | 987 | 928 | 631 | 818 | 0 | 662 | 845 | 4871 | 28 |

## Badminton
### Men

| Athlete | Event | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Shōji Satō | Singles | Bao Cl (CHN) L 6–15, 5–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Hidetaka Yamada | Singles | Hidayat (INA) L 8–15, 10–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Keita Masuda Tadashi Ohtsuka | Doubles | Bye | Cai Y / Fu Hf (CHN) L 7–15, 17–16, 9–15 | Did not advance | Did not advance | Did not advance | Did not advance |

### Women

| Athlete | Event | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kaori Mori | Singles | Nieminen (FIN) W 11–5, 11–4 | Zhou M (CHN) L 2–11, 4–11 | Did not advance | Did not advance | Did not advance | Did not advance |
| Miho Tanaka | Singles | Ponsana (INA) L 7–11, 11–5, 8–11 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kanako Yonekura | Singles | Martin (DEN) L 4–11, 7–11 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Chikako Nakayama Keiko Yoshitomi | Doubles | Bye | Chankrachangwong / Thungthongkam (THA) L 4–15, 11–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Seiko Yamada Shizuka Yamamoto | Doubles | Chin E H / Wong P T (MAS) L 7–15, 9–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

### Mixed

| Athlete | Event | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Tadashi Ohtsuka Shizuka Yamamoto | Doubles | Blair / Munt (GBR) L 15–13, 7–15, 13–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Baseball
### Roster

Manager: 33 – Kiyoshi Nakahata
Coaches: 31 – Yutaka Takagi, 32 – Yutaka Ohno
| Pos. | No. | Player | Date of birth (age) | Club |
| OF | 1 | Kosuke Fukudome | April 26, 1972 | Chunichi Dragons |
| IF | 2 | Michihiro Ogasawara | October 25, 1973 | Hokkaido Nippon-Ham Fighters |
| IF | 5 | Norihiro Nakamura | July 24, 1973 | Osaka Kintetsu Buffaloes |
| IF | 6 | Shinya Miyamoto | November 5, 1970 | Yakult Swallows |
| IF | 8 | Makoto Kaneko | November 8, 1975 | Hokkaido Nippon-Ham Fighters |
| C | 9 | Kenji Johjima | June 8, 1976 | Fukuoka Daiei Hawks |
| OF | 10 | Yoshitomo Tani | February 9, 1973 | Orix BlueWave |
| P | 11 | Naoyuki Shimizu | November 24, 1975 | Chiba Lotte Marines |
| P | 13 | Hitoki Iwase | November 8, 1974 | Chunichi Dragons |
| P | 15 | Hiroki Kuroda | February 15, 1975 | Hiroshima Toyo Carp |
| P | 16 | Yuya Ando | December 27, 1977 | Hanshin Tigers |
| P | 17 | Daisuke Miura | December 25, 1973 | Yokohama BayStars |
| P | 18 | Daisuke Matsuzaka | September 13, 1980 | Seibu Lions |
| P | 19 | Koji Uehara | April 3, 1975 | Yomiuri Giants |
| P | 20 | Hisashi Iwakuma | April 12, 1981 | Osaka Kintetsu Buffaloes |
| P | 21 | Tsuyoshi Wada | February 21, 1981 | Fukuoka Daiei Hawks |
| OF | 23 | Arihito Muramatsu | December 12, 1972 | Orix BlueWave |
| OF | 24 | Yoshinobu Takahashi | April 3, 1975 | Yomiuri Giants |
| IF | 25 | Atsushi Fujimoto | October 4, 1977 | Hanshin Tigers |
| OF | 27 | Takuya Kimura | April 15, 1972 | Hiroshima Toyo Carp |
| P | 30 | Masahide Kobayashi | May 24, 1974 | Chiba Lotte Marines |
| OF | 55 | Kazuhiro Wada | June 19, 1972 | Seibu Lions |
| C | 59 | Ryoji Aikawa | July 11, 1976 | Yokohama BayStars |
| P | 61 | Hirotoshi Ishii | September 14, 1977 | Yakult Swallows |

### Preliminary round

| Team | W | L | Tiebreaker |
| Japan | 6 | 1 | 1-0 |
| Cuba | 6 | 1 | 0-1 |
| Canada | 5 | 2 | - |
| Australia | 4 | 3 | - |
| Chinese Taipei | 3 | 4 | - |
| Netherlands | 2 | 5 | - |
| Greece | 1 | 6 | 1-0 |
| Italy | 1 | 6 | 0-1 |
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Japan | 2 | 0 | 3 | 1 | 1 | 4 | 1 | 12 | 13 | 0 |
| Italy | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
| WP: Koji Uehara (1-0) LP: Anthony Massimino (0-1) Home runs: JPN: N. Nakamura in 3rd, 2 RBIs; K. Fukudome in 4th, 1 RBI ITA: None |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Netherlands | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 1 |
| Japan | 1 | 1 | 0 | 0 | 2 | 0 | 0 | 4 | x | 8 | 11 | 1 |
| WP: Hiroki Kuroda (1-0) LP: Diego Markwell (0-1) Home runs: NED: None JPN: A. Fujimoto in 8th, 2 RBIs |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 0 | 2 | 0 | 2 | 0 | 0 | 1 | 0 | 1 | 6 | 12 | 2 |
| Cuba | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 7 | 2 |
| WP: Daisuke Matsuzaka (1-0) LP: Vicyohandri Odelín (0-1) Sv: Hirotoshi Ishii (1S) Home runs: JPN: K. Jojima in 4th, 1 RBI; N. Nakamura in 4th, 1 RBI; K. Wada in 2nd, 2 RBIs CUB: None |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Australia | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 3 | 0 | 9 | 15 | 1 |
| Japan | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 4 | 9 | 1 |
| WP: Ryan Rowland-Smith (1-0) LP: Daisuke Miura (0-1) Sv: Jeff Williams (1S) Home runs: AUS: D. Nilsson in 8th, 1 RBI JPN: K. Fukudome in 5th, 3 RBIs |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Canada | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 5 | 1 |
| Japan | 2 | 1 | 1 | 3 | 1 | 0 | 0 | 1 | x | 9 | 11 | 0 |
| WP: Tsuyoshi Wada (1-0) LP: Mike Johnson (1-1) Home runs: CAN: None JPN: Y. Takahashi in 1st, 2 RBIs; Y. Tani in 2nd, 1 RBI; K. Wada in 4th, 2 RBIs |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Chinese Taipei | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 | 1 |
| Japan | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 1 | 4 | 10 | 0 |
| WP: Hiroki Kuroda (2-0) LP: Tsao Chin-Hui (0-1-1) Home runs: TPE: Chen C. F. in 3rd, 3 RBIs JPN: Y. Takahashi in 7th, 2 RBIs |||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 0 | 1 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 6 | 13 | 0 |
| Greece | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 4 | 1 |
| WP: Naoyuki Shimizu (1-0) LP: Meleti Ross Melehes (0-2) Home runs: JPN: K. Fukudome in 7th, 2 RBIs; Y. Takahashi in 7th, 2 RBIs GRE: E. D. Pappas in 7th, 1 RBI |||||||||||||

### Semifinal

| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Australia | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 5 | 2 |
| Japan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 |
| WP: Chris Oxspring (2-0) LP: Daisuke Matsuzaka (1-1) Sv: Jeff Williams (2S) |||||||||||||

### Bronze Medal Final

| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Japan | 2 | 0 | 4 | 1 | 0 | 0 | 0 | 4 | 0 | 11 | 13 | 0 |
| Canada | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 5 | 0 |
| WP: Tsuyoshi Wada (2-0) LP: Mike Johnson (1-2) Home runs: JPN: K. Jojima in 1st, 2 RBIs CAN: J. Ware in 5th, 1 RBI |||||||||||||

### Won Bronze Medal
## Basketball
### Women's tournament
#### Roster

The following is the Japan roster in the women's basketball tournament of the 2004 Summer Olympics.

#### Group play

| Pos | Teamvte | Pld | W | L | PF | PA | PD | Pts | Qualification |
| 1 | Australia | 5 | 5 | 0 | 418 | 313 | +105 | 10 | Quarterfinals |
| 2 | Russia | 5 | 4 | 1 | 389 | 333 | +56 | 9 | Quarterfinals |
| 3 | Brazil | 5 | 3 | 2 | 430 | 361 | +69 | 8 | Quarterfinals |
| 4 | Greece (H) | 5 | 2 | 3 | 353 | 392 | −39 | 7 | Quarterfinals |
| 5 | Japan | 5 | 1 | 4 | 381 | 485 | −104 | 6 | |
| 6 | Nigeria | 5 | 0 | 5 | 335 | 422 | −87 | 5 | |
* 14 August 2004 16:45
| Japan | 62–128 | Brazil |
| Scoring by quarter: 22–26, 3–36, 17–33, 20–33 |||
| Pts: Hamaguchi 23 Rebs: Yano 5 Asts: Kusuda, Nagata 2 | | Pts: Oliveira 25 Rebs: Oliveira 13 Asts: Pinto 7 |
* Helliniko Indoor Arena, Athens Attendance: 950 Referees: Giampaolo Cicoria (Italy) Abreu Joao (Mozambique)
* 16 August 2004 11:15
| Nigeria | 73–79 | Japan |
| Scoring by quarter: 22–22, 24–23, 16–20, 11–14 |||
| Pts: Udoka 19 Rebs: Udoka 16 Asts: Four players 1 | | Pts: Yano 21 Rebs: Kusuda, Yano 6 Asts: Kusuda, Hamaguchi 4 |
* Olympic Indoor Hall, Athens Attendance: 400 Referees: Elizabeth Sisk (United States) Dallas Pickering (New Zealand)
* 18 August 2004 11:15
| Japan | 78–97 | Australia |
| Scoring by quarter: 20–26, 15–30, 10–26, 33–15 |||
| Pts: Oga 21 Rebs: Yano 4 Asts: Kawabata, Tachikawa 2 | | Pts: Jackson 31 Rebs: Jackson 9 Asts: Tranquilli 5 |
* Helliniko Indoor Arena, Athens Attendance: 500 Referees: Alejandro Chiti (Argentina) Song Yanping (China)
* 20 August 2004 9:00
| Russia | 94–71 | Japan |
| Scoring by quarter: 29–21, 21–15, 24–15, 20–20 |||
| Pts: Baranova 22 Rebs: Stepanova 12 Asts: Shchegoleva 3 | | Pts: Hamaguchi 14 Rebs: Yabuuchi 4 Asts: Oyama, Tachikawa 2 |
* Olympic Indoor Hall, Athens Attendance: 185 Referees: Abdelillah Chlif (Morocco) Kim Ja Ok (South Korea)
* 22 August 2004 16:45
| Greece | 93–91 | Japan |
| Scoring by quarter: 27–15, 20–26, 16–22, 30–28 |||
| Pts: Maltsi 33 Rebs: Maltsi 11 Asts: Kalentzou 3 | | Pts: Yano 28 Rebs: Kusuda 5 Asts: Kusuda |
* Helliniko Indoor Arena, Athens Attendance: 7,223 Referees: Chantal Julien (France) Michael Aylen (Australia)

#### 9th-10th Place Final

* 24 August 2004 11:15
* 9th place
| Japan | 63–82 | China |
| Scoring by quarter: 12–20, 17–10, 19–21, 15–31 |||
| Pts: Kusuda, Koiso 13 Rebs: Oyama 6 Asts: Kusuda 2 | | Pts: Sui 25 Rebs: Wang 13 Asts: Miao 5 |
* Helliniko Indoor Arena, Athens Attendance: 253 Referees: Abdellilah Chlif (Morocco) Abreu Joao (Mozambique)

## Boxing

Japan sent one boxer to the 2004 Olympics.
| 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 |
| Toshiyuki Igarashi | Light flyweight | Kebede (ETH) L 21–26 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Canoeing
### Sprint

| Athlete | Event | Heats | Heats | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Miyuki Shirata | Women's K-1 500 m | 2:00.860 | 7 q | 2:03.076 | 7 | Did not advance | Did not advance |
| Shinobu Kitamoto Yumiko Suzuki | Women's K-2 500 m | 1:44.730 | 4 q | 1:47.614 | 8 | Did not advance | Did not advance |
| Miho Adachi Shinobu Kitamoto Yumiko Suzuki Mikiko Takeya | Women's K-4 500 m | 1:36.873 | 4 q | 1:35.493 | 2 Q | 1:40.188 | 9 |
Qualification Legend: Q = Qualify to final; q = Qualify to semifinal

## Cycling
### Road

| Athlete | Event | Time | Rank |
| Shinri Suzuki | Men's road race | Did not finish | Did not finish |
| Yasutaka Tashiro | Men's road race | 5:50:35 | 56 |
| Miyoko Karami | Women's road race | 3:30:30 | 41 |
| Miho Oki | Women's road race | 3:25:42 | 20 |

### Track
#### 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 |
| Tomohiro Nagatsuka | Men's sprint | 10.646 67.631 | 14 | Withdrew | Withdrew | Withdrew | Withdrew | Withdrew | Withdrew | Withdrew | Withdrew |
| Toshiaki Fushimi Masaki Inoue Tomohiro Nagatsuka | Men's team sprint | 44.355 60.872 | 3 Q | Netherlands (NED) W 44.081 61.250 | — | — | — | — | — | Germany (GER) L 44.246 61.022 | |

#### Time trial

| Athlete | Event | Time | Rank |
| Sayuri Osuga | Women's time trial | 35.045 | 10 |

#### Keirin

| Athlete | Event | 1st round | Repechage | 2nd round | Final |
| Athlete | Event | Rank | Rank | Rank | Rank |
| Toshiaki Fushimi | Men's keirin | 6 R | 5 | Did not advance | Did not advance |

#### Omnium

| Athlete | Event | Points | Laps | Rank |
| Makoto Iijima | Men's points race | 13 | 0 | 16 |

### Mountain biking

| Athlete | Event | Time | Rank |
| Kenji Takeya | Men's cross-country | LAP (1 lap) | 38 |
| Yukari Nakagome | Women's cross-country | LAP (1 lap) | 22 |

## Diving

Japanese divers qualified two spots each in men's springboard and women's platform.

### Men

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Ken Terauchi | 3 m springboard | 456.15 | 4 Q | 701.79 | 5 Q | 690.00 | 8 |

### Women

| Athlete | Event | Preliminaries | Preliminaries | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Takiri Miyazaki | 10 m platform | 315.78 | 12 Q | 486.63 | 12 Q | 479.10 | 11 |

## Equestrian
### 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 |
| Tadayoshi Hayashi | Swanky | Individual | 8 | =47 | 17 | 25 | 54 Q | Retired | Retired | Retired | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Ryuichi Obata | Oliver Q | Individual | 14 | =66 | Eliminated | Eliminated | Eliminated | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Taizo Sugitani | Lamalushi | Individual | 12 | =60 | 16 | 28 | 61 Q | 9 | 37 | =51 Q | 8 | =12 Q | 12 | 20 | =16 | 20 | =16 |
| Yuka Watanabe | Nike | Individual | 3 | 18 | 3 | 6 | =13 Q | 18 | 24 | =37 Q | 17 | 39 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Tadayoshi Hayashi Ryuichi Obata Taizo Sugitani Yuka Watanabe | See above | Team | — | — | — | — | — | — | — | — | 36 | 13 | Did not advance | Did not advance | Did not advance | 36 | 13 |

## Fencing

Five fencers, two men and three women, represented Japan in 2004.

### 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 |
| Yuki Ota | Individual foil | Bye | Chumacero (MEX) W 15–9 | Ganeyev (RUS) L 8–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Masashi Nagara | Individual sabre | Basmatzian (GRE) W 15–8 | Pozdnyakov (RUS) L 9–15 | 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 | Wilson (RSA) W 15–6 | Cascioli (ITA) L 14–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Chieko Sugawara | Individual foil | — | Carbone (ARG) W 15–6 | Trillini (ITA) L 2–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Madoka Hisagae | Individual sabre | — | Nagy (HUN) W 15–14 | Zagunis (USA) L 13–15 | Did not advance | Did not advance | Did not advance | Did not advance |

## Field hockey
### Women's tournament
#### Roster

The following is the Japanese roster in the women's field hockey tournament of the 2004 Summer Olympics.
Head coach: Kazunori Kobayashi
* Rie Terazono (GK)
* Keiko Miura (C)
* Akemi Kato
* Yukari Yamamoto
* Sachimi Iwao
* Chie Kimura
* Rika Komazawa
* Sakae Morimoto
* Kaori Chiba
* Naoko Saito
* Tomomi Komori
* Nami Miyazaki (GK)
* Akiko Kitada
* Rika Ishida
* Emi Sakurai
* Miyuki Nakagawa

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | China | 4 | 4 | 0 | 0 | 11 | 2 | +9 | 12 | Semi-finals |
| 2 | Argentina | 4 | 3 | 0 | 1 | 12 | 4 | +8 | 9 | Semi-finals |
| 3 | Japan | 4 | 2 | 0 | 2 | 5 | 7 | −2 | 6 | |
| 4 | New Zealand | 4 | 1 | 0 | 3 | 3 | 9 | −6 | 3 | |
| 5 | Spain | 4 | 0 | 0 | 4 | 3 | 12 | −9 | 0 | |
* 14 August 2004 10:30
| China | 3 – 0 | Japan |
| Fu Baorong 7' Tang Chunling 39' Chen Qiuqi 67' | Report | |
* Umpires: Marelize de Klerk (RSA) Renee Cohen (NED)
* 16 August 2004 08:30
| Japan | 1 – 3 | Argentina |
| Komazawa 27' | Report | Arrondo 19' García 37' Di Giacomo 58' |
* Umpires: Minka Woolley (AUS) Lyn Farrell (NZL)
* 18 August 2004 20:00
| Japan | 2 – 0 | New Zealand |
| Komori 18', 52' | Report | |
* Umpires: Carolina de la Fuente (ARG) Gina Spitaleri (ITA)
* 20 August 2004 20:00
| Spain | 1 – 2 | Japan |
| Termens 67' | Report | Morimoto 5' Komazawa 34' |
* Umpires: Jean Duncan (GBR) Ute Conen (GER)

#### 5th-8th Place Semifinal

* 24 August 2004 11:00
| Japan | 1 – 3 | Australia |
| Komori 15' | Report | Gallagher 27' Faulkner 33' Powell 37' |
* Umpires: Sarah Garnett (NZL) Carolina de la Fuente (ARG)

#### 7th-8th Place Final

* 27 August 2004 08:30
| South Korea | 3 – 1 | Japan |
| Oh Ko-Woon 12', 18' Kim Jin-Kyoung 19' | Report | Miura 35+' |
* Umpires: Carolina de la Fuente (ARG) Julie Ashton-Lucy (AUS)

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

The following is the Japanese squad in the men's football tournament of the 2004 Summer Olympics.
Head coach: Masakuni Yamamoto
| No. | Pos. | Player | Date of birth (age) | Caps | Goals | 2004 club |
| 1 | 1GK | Hitoshi Sogahata* | (1979-08-02)2 August 1979 (aged 25) | 4 | 0 | Kashima Antlers |
| 2 | 2DF | Marcus Tulio Tanaka | (1981-04-24)24 April 1981 (aged 23) | 0 | 0 | Urawa Red Diamonds |
| 3 | 2DF | Teruyuki Moniwa | (1981-09-08)8 September 1981 (aged 22) | 3 | 0 | FC Tokyo |
| 4 | 2DF | Daisuke Nasu | (1981-10-10)10 October 1981 (aged 22) | 0 | 0 | Yokohama F. Marinos |
| 5 | 3MF | Yuki Abe | (1981-09-06)6 September 1981 (aged 22) | 0 | 0 | JEF United Ichihara |
| 6 | 3MF | Yasuyuki Konno | (1983-01-25)25 January 1983 (aged 21) | 0 | 0 | FC Tokyo |
| 7 | 3MF | Kōji Morisaki | (1981-05-09)9 May 1981 (aged 23) | 0 | 0 | Sanfrecce Hiroshima |
| 8 | 3MF | Shinji Ono* | (1979-09-27)27 September 1979 (aged 24) | 42 | 4 | Feyenoord |
| 9 | 4FW | Daiki Takamatsu | (1981-09-08)8 September 1981 (aged 22) | 0 | 0 | Oita Trinita |
| 10 | 3MF | Daisuke Matsui | (1981-05-11)11 May 1981 (aged 23) | 1 | 0 | Kyoto Purple Sanga |
| 11 | 4FW | Tatsuya Tanaka | (1982-11-27)27 November 1982 (aged 21) | 0 | 0 | Urawa Red Diamonds |
| 12 | 2DF | Naoya Kikuchi | (1984-11-24)24 November 1984 (aged 19) | 0 | 0 | Júbilo Iwata |
| 13 | 3MF | Yūichi Komano | (1981-06-25)25 June 1981 (aged 23) | 0 | 0 | Sanfrecce Hiroshima |
| 14 | 3MF | Naohiro Ishikawa | (1981-05-12)12 May 1981 (aged 23) | 2 | 0 | FC Tokyo |
| 15 | 2DF | Yūhei Tokunaga | (1983-09-25)25 September 1983 (aged 20) | 0 | 0 | Waseda University |
| 16 | 4FW | Yoshito Ōkubo | (1982-06-09)9 June 1982 (aged 22) | 15 | 0 | Cerezo Osaka |
| 17 | 4FW | Sōta Hirayama | (1985-06-06)6 June 1985 (aged 19) | 0 | 0 | University of Tsukuba |
| 18 | 1GK | Takaya Kurokawa | (1981-04-07)7 April 1981 (aged 23) | 0 | 0 | Shimizu S-Pulse |
* Over-aged player.

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Paraguay | 3 | 2 | 0 | 1 | 6 | 5 | +1 | 6 | Qualified for the quarterfinals |
| 2 | Italy | 3 | 1 | 1 | 1 | 5 | 5 | 0 | 4 | Qualified for the quarterfinals |
| 3 | Ghana | 3 | 1 | 1 | 1 | 4 | 4 | 0 | 4 | |
| 4 | Japan | 3 | 1 | 0 | 2 | 6 | 7 | −1 | 3 | |

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

Head coach: Eiji Ueda
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 | Nozomi Yamago | (1975-01-16)16 January 1975 (aged 29) | 58 | 0 | Saitama Reinas |
| 2 | 2DF | Kyoko Yano | (1984-06-03)3 June 1984 (aged 20) | 7 | 1 | Kanagawa University |
| 3 | 2DF | Hiromi Isozaki (captain) | (1975-12-22)22 December 1975 (aged 28) | 52 | 4 | Tasaki Perule |
| 4 | 2DF | Yumi Obe | (1975-02-15)15 February 1975 (aged 29) | 78 | 7 | YKK AP Tohoku Flappers |
| 5 | 2DF | Naoko Kawakami | (1977-11-16)16 November 1977 (aged 26) | 31 | 0 | Tasaki Perule |
| 6 | 3MF | Tomoe Sakai | (1978-05-27)27 May 1978 (aged 26) | 54 | 2 | NTV Beleza |
| 7 | 3MF | Emi Yamamoto | (1982-03-09)9 March 1982 (aged 22) | 11 | 0 | Tasaki Perule |
| 8 | 3MF | Tomomi Miyamoto | (1978-12-31)31 December 1978 (aged 25) | 48 | 9 | Kunoichi |
| 9 | 4FW | Eriko Arakawa | (1979-10-30)30 October 1979 (aged 24) | 12 | 5 | NTV Beleza |
| 10 | 4FW | Homare Sawa | (1978-09-06)6 September 1978 (aged 25) | 79 | 48 | NTV Beleza |
| 11 | 4FW | Mio Otani | (1979-05-05)5 May 1979 (aged 25) | 37 | 23 | Tasaki Perule |
| 12 | 2DF | Yasuyo Yamagishi | (1979-11-28)28 November 1979 (aged 24) | 45 | 6 | Kunoichi |
| 13 | 2DF | Aya Shimokozuru | (1982-06-07)7 June 1982 (aged 22) | 0 | 0 | Speranza |
| 14 | 4FW | Karina Maruyama | (1983-03-26)26 March 1983 (aged 21) | 16 | 6 | Nippon Sport Science University |
| 15 | 3MF | Miyuki Yanagita | (1981-04-11)11 April 1981 (aged 23) | 25 | 3 | Tasaki Perule |
| 16 | 3MF | Yayoi Kobayashi | (1981-09-18)18 September 1981 (aged 22) | 43 | 11 | NTV Beleza |
| 17 | 3MF | Kozue Ando | (1982-07-09)9 July 1982 (aged 22) | 0 | 0 | Saitama Reinas |
| 18 | 1GK | Shiho Onodera | (1973-11-18)18 November 1973 (aged 30) | 43 | 11 | NTV Beleza |

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Sweden | 2 | 1 | 0 | 1 | 2 | 2 | 0 | 3 | Qualified for the quarterfinals |
| 2 | Nigeria | 2 | 1 | 0 | 1 | 2 | 2 | 0 | 3 | Qualified for the quarterfinals |
| 3 | Japan | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 3 | Qualified for the quarterfinals |

#### Quarterfinal
## 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 | 9.150 | 9.812 Q | — | 9.625 | 9.475 | 9.737 | — | — | — | 9.750 | — | 9.600 | 9.737 | 9.825 | — | — |
| Hisashi Mizutori | Team | — | 9.450 | 9.650 | 9.500 | — | 9.737 | — | — | — | — | 9.625 | — | — | — | — | — |
| Daisuke Nakano | Team | 9.725 Q | — | 9.012 | — | 9.800 Q | 9.775 Q | — | — | 9.412 | — | — | — | — | — | — | — |
| Hiroyuki Tomita | Team | 8.987 | 9.750 Q | 9.750 Q | 9.650 | 9.787 Q | 9.725 | 57.649 | 3 Q | — | 9.675 | 9.787 | 9.687 | 9.700 | 9.850 | — | — |
| Naoya Tsukahara | Team | 9.725 | 9.687 | 9.700 | 9.425 | 9.650 | — | — | — | 9.312 | 9.650 | 9.712 | — | 9.575 | — | — | — |
| Isao Yoneda | Team | 9.725 Q | 8.450 | 9.625 | 9.637 | 9.687 | 9.800 Q | 56.924 | 10 Q | 9.587 | — | — | 9.550 | — | 9.787 | — | — |
| Total | Team | 38.325 | 38.699 | 38.725 | 38.412 | 38.924 | 39.049 | 232.134 | 1 Q | 28.311 | 29.075 | 29.124 | 28.837 | 29.012 | 29.462 | 173.821 | |

#### Individual finals

| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | PH | R | V | PB | HB | Total | Rank |
| Takehiro Kashima | Pommel horse | — | 9.787 | — | — | — | — | 9.787 | |
| Daisuke Nakano | Floor | 9.712 | — | — | — | — | — | 9.712 | 6 |
| Daisuke Nakano | Parallel bars | — | — | — | — | 9.762 | — | 9.762 | 5 |
| Daisuke Nakano | Horizontal bar | — | — | — | — | — | 8.750 | 8.750 | 9 |
| Hiroyuki Tomita | All-around | 9.062 | 9.737 | 9.762 | 9.625 | 9.637 | 9.662 | 57.485 | 6 |
| Hiroyuki Tomita | Pommel horse | — | 9.062 | — | — | — | — | 9.062 | 8 |
| Hiroyuki Tomita | Rings | — | — | 9.800 | — | — | — | 9.800 | 4 |
| Hiroyuki Tomita | Parallel bars | — | — | — | — | 9.775 | — | 9.775 | |
| Isao Yoneda | All-around | 9.650 | 9.575 | 9.337 | 9.700 | 9.612 | 9.025 | 56.899 | 10 |
| Isao Yoneda | Floor | 9.662 | — | — | — | — | — | 9.662 | 7 |
| Isao Yoneda | Horizontal bar | — | — | — | — | — | 9.787 | 9.787 | |

#### Women

| 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 | V | UB | BB | F | Total | Rank | V | UB | BB | F | Total | Rank |
| Manami Ishizaka | All-around | 9.125 | 9.187 | 8.637 | 9.262 | 36.211 | 33 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kyoko Oshima | All-around | 8.662 | 9.362 | 8.437 | 8.500 | 34.961 | 51 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

### Rhythmic

| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Hoop | Ball | Clubs | Ribbon | Total | Rank | Hoop | Ball | Clubs | Ribbon | Total | Rank |
| Yukari Murata | Individual | 21.775 | 22.425 | 22.400 | 21.550 | 88.150 | 18 | Did not advance | Did not advance | 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 |
| Haruka Hirota | Women's | 63.00 | 7 Q | 37.20 | 7 |

## Judo

Fourteen Japanese judoka (seven males and five females) qualified for the 2004 Summer Olympics.

### 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 |
| Tadahiro Nomura | −60 kg | Bye | Lara (DOM) W 1120–0000 | Gussenberg (GER) W 1000–0000 | Albarracín (ARG) W 1000–0000 | Tsagaanbaatar (MGL) W 1000–0000 | Bye | Bye | Bye | Khergiani (GEO) W 0100–0001 | |
| Masato Uchishiba | −66 kg | — | Lencina (ARG) W 1011–0000 | Dashdavaa (MGL) W 1001–0000 | Dzhafarov (RUS) W 1001–0000 | Georgiev (BUL) W 1000–0000 | Bye | Bye | Bye | Krnáč (SVK) W 1000–0000 | |
| Masahiro Takamatsu | −73 kg | Bye | Kevkhishvili (GEO) L 0010–0101 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Masahiko Tomouchi | −81 kg | — | Nossov (RUS) L 0001–0201 | Did not advance | Did not advance | Did not advance | Meloni (ITA) L 0001–0102 | Did not advance | Did not advance | Did not advance | Did not advance |
| Hiroshi Izumi | −90 kg | — | Kukharenka (BLR) W 1000–0000 | Iliadis (GRE) W 1010–0010 | Costa (ARG) W 0001–0000 | Hwang (KOR) W 0101–0001 | Bye | Bye | Bye | Zviadauri (GEO) L 0000–1001 | |
| Kosei Inoue | −100 kg | Mekić (BIH) W 1010–0000 | Kovács (HUN) W 0002–0001 | Kelly (AUS) W 1000–0000 | van der Geest (NED) L 0010–1020 | Did not advance | Bye | Miraliyev (AZE) L 0000–1011 | Did not advance | Did not advance | Did not advance |
| Keiji Suzuki | +100 kg | Bye | Tölzer (GER) W 0120–0010 | Papaioannou (GRE) W 1101–0001 | Rybak (BLR) W 1011-0100 | Bianchessi (ITA) W 1010–0001 | Bye | Bye | Bye | Tmenov (RUS) W 1000–0000 | |

### 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 | Bye | Karagiannopoulou (GRE) W 0220–0001 | Haddad (ALG) W 1011–0001 | Dumitru (ROU) W 0211–0001 | Bye | Bye | Bye | Jossinet (FRA) W 0112–0001 | |
| Yuki Yokosawa | −52 kg | Ri S-S (PRK) W 1000–0000 | Diédhiou (SEN) W 0101–0100 | Singleton (GBR) W 1001–0000 | Savón (CUB) W 1000–0000 | Bye | Bye | Bye | Xian Dm (CHN) L 0000–1000 | |
| Kie Kusakabe | −57 kg | Fleming (VEN) W 1000–0000 | Erdenet-Od (MGL) W 0020–0002 | Bönisch (GER) L 0000–0200 | Did not advance | Bye | Fernández (ESP) L 0001–0010 | Did not advance | Did not advance | Did not advance |
| Ayumi Tanimoto | −63 kg | Dhahri (TUN) W 1000–0000 | Maza (ECU) W 1000–0000 | Chisholm (CAN) W 1000–0000 | Krukower (ARG) W WO | Bye | Bye | Bye | Heill (AUT) W 0200–0000 | |
| Masae Ueno | −70 kg | Schutz (USA) W 1000–0001 | Sraka (SVK) W 0012–0001 | Jacques (BEL) W 1000–0000 | Arlove (AUS) W 1002–0000 | Bye | Bye | Bye | Bosch (NED) W 1000–0001 | |
| Noriko Anno | −78 kg | Bye | Pinto (VEN) W 1011–0000 | Morico (ITA) W 0101–0001 | Lebrun (FRA) W 0010–0000 | Bye | Bye | Bye | Liu X (CHN) W 1010–0001 | |
| Maki Tsukada | +78 kg | Bye | Malone (AUS) W 1000–0000 | Prokofyeva (UKR) W 1012–0100 | Donguzashvili (RUS) W 0210–0000 | Bye | Bye | Bye | Beltrán (CUB) W 1000–0100 | |

## Rowing

The Japanese rowers qualified the following boats:

### Men

| Athlete | Event | Heats | Heats | Repechage | Repechage | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank | Time | Rank |
| Kazushige Ura Daisaku Takeda | Lightweight double sculls | 6:24.08 | 4 R | 6:17.26 | 1 SA/B | 6:18.51 | 3 FA | 6:24.98 | 6 |

### Women

| Athlete | Event | Heats | Heats | Repechage | Repechage | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Akiko Iwamoto Kahori Uchiyama | Lightweight double sculls | 7:14.04 | 5 R | 7:07.07 | 4 FC | 7:37.46 | 13 |
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; R=Repechage

## Sailing

Japanese sailors have qualified one boat for each of the following events.

### 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 |
| Motokazu Kenjo | Mistral | 16 | 23 | 18 | 23 | OCS | 4 | 12 | 12 | 15 | 19 | 28 | 170 | 19 |
| Kazuto Seki Kenjiro Todoroki | 470 | 3 | 7 | 21 | 18 | 7 | 12 | 1 | 9 | 5 | 17 | 11 | 90 | |

### 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 |
| Masako Imai | Mistral | 12 | 14 | 17 | 11 | 5 | 16 | 17 | 10 | 16 | 17 | 18 | 135 | 17 |
| Maiko Sato | Europe | 24 | 16 | 24 | 16 | 23 | 11 | 23 | 10 | 24 | 22 | 23 | 192 | 24 |
| Mitsuko Satake Yuka Yoshisako | 470 | DSQ | 17 | 16 | 10 | 8 | 12 | 4 | 12 | 3 | 18 | 1 | 101 | 11 |

### 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 |
| Kunio Suzuki | Laser | 30 | 22 | 39 | OCS | 29 | 25 | 30 | 28 | 22 | 29 | — | — | — | — | — | 27 | 281 | 35 |
| Kenji Nakamura Masato Takaki | 49er | 12 | 14 | 19 | OCS | 4 | 2 | 19 | 4 | 2 | 14 | 4 | 7 | 17 | 18 | 14 | 15 | 146 | 15 |
M = Medal race; OCS = On course side of the starting line; DSQ = Disqualified; DNF = Did not finish; DNS= Did not start; RDG = Redress given

## Shooting

Nine Japanese shooters (three men and six women) qualified to compete in the following events:

### Men

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Masaru Nakashige | 10 m air pistol | 576 | =23 | Did not advance | Did not advance |
| Masaru Nakashige | 50 m pistol | 537 | 38 | Did not advance | Did not advance |
| Shuji Tazawa | 10 m air pistol | 573 | =30 | Did not advance | Did not advance |
| Shuji Tazawa | 25 m rapid fire pistol | 573 | 15 | Did not advance | Did not advance |
| Masaru Yanagida | 10 m air rifle | 594 | =9 | Did not advance | Did not advance |
| Masaru Yanagida | 50 m rifle prone | 591 | =24 | Did not advance | Did not advance |
| Masaru Yanagida | 50 m rifle 3 positions | 1159 | =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 | 378 | 25 | Did not advance | Did not advance |
| Michiko Fukushima | 25 m pistol | 577 | =13 | Did not advance | Did not advance |
| Yoko Inada | 10 m air pistol | 382 | =10 | Did not advance | Did not advance |
| Megumi Inoue | Double trap | 109 | 3 Q | 140 | 5 |
| Yukari Konishi | 25 m pistol | 575 | =19 | Did not advance | Did not advance |
| Hiromi Misaki | 10 m air rifle | 392 | =22 | Did not advance | Did not advance |
| Hiromi Misaki | 50 m rifle 3 positions | 569 | 24 | Did not advance | Did not advance |
| Taeko Takeba | Trap | 59 | 8 | Did not advance | Did not advance |

## Softball

In the final game of the preliminary round, Yukiko Ueno of Japan pitched the first perfect game in Olympic softball history as Japan defeated China 2-0. Two days later, Japan again defeated China in the 3rd/4th semifinal to guarantee a medal. Their loss in the bronze medal game left them with the bronze.

### Team Roster

Japan :
| Position | No. | Player | Birth | Club in 2004 |
| IF | 3 | Masumi Mishina | MAR/12/1982 | Hitachi Takasaki |
| IF | 4 | Emi Naito | OCT/06/1979 | Toyota Industries Corp. |
| IF | 5 | Rie Sato | AUG/14/1980 | Leo Palace 21 |
| OF | 7 | Yumi Iwabuchi | SEP/10/1979 | Hitachi Takasaki |
| OF | 8 | Eri Yamada | MAR/08/1984 | Hitachi Software |
| P | 12 | Naoko Sakamoto | MAY/11/1985 | Hitachi Takasaki |
| P | 15 | Yuki Sato | NOV/03/1980 | Leo Palace 21 |
| P | 17 | Yukiko Ueno | JUL/22/1982 | Hitachi Takasaki |
| P | 18 | Juri Takayama | OCT/21/1976 | Toyota Industries Corp. |
| IF | 19 | Kazue Ito | DEC/22/1977 | Hitachi Takasaki |
| P | 21 | Hiroko Sakai | NOV/03/1978 | Toda Chūō General Hospital |
| C | 23 | Emi Inui | OCT/26/1983 | Hitachi Takasaki |
| C | 25 | Noriko Yamaji | SEP/17/1970 | Taiyo Yuden |
| OF | 26 | Haruka Saito | MAR/14/1970 | Hitachi Software |
| IF | 28 | Reika Utsugi | JUN/01/1963 | Hitachi Takasaki |
| Bench Coaches |||||
| Team Manager | 30 | Taeko Utsugi | APR/06/1953 | |
| Coach | | Mitsufumi Urano | JAN/25/1953 | |
| Coach | | Yoshimi Kobayashi | AUG/11/1968 | |

### Preliminary Round

| Team | Pld | W | L | RF | RA | Pct |
| United States | 7 | 7 | 0 | 41 | 0 | 1.000 |
| Australia | 7 | 6 | 1 | 22 | 14 | 0.857 |
| Japan | 7 | 4 | 3 | 17 | 8 | 0.571 |
| China | 7 | 3 | 4 | 15 | 20 | 0.429 |
| Canada | 7 | 3 | 4 | 6 | 14 | 0.429 |
| Chinese Taipei | 7 | 2 | 5 | 3 | 13 | 0.286 |
| Greece | 7 | 2 | 5 | 6 | 24 | 0.286 |
| Italy | 7 | 1 | 6 | 8 | 24 | 0.143 |
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Australia | 0 | 1 | 0 | 2 | 1 | 0 | 0 | 4 | 7 | 0 |
| Japan | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 |
| WP: Tanya Harding (1-0) LP: Yukiko Ueno (0-1) Home runs: AUS: N.Titcume in 4th, 1 RBI JPN: None |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Chinese Taipei | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
| Japan | 1 | 4 | 0 | 0 | 1 | 0 | X | 6 | 13 | 0 |
| WP: Hiroko Sakai (1-0) LP: Lin Su-Hua (0-1) |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | R | H | E |
| United States | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 0 |
| Japan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| WP: Cat Osterman (1-0) LP: Juri Takayama (0-1) ||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | R | H | E |
| Canada | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 |
| Japan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 |
| WP: Lauren Bay (2-1) LP: Yukiko Ueno (0-2) ||||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Japan | 0 | 3 | 1 | 0 | 0 | 0 | 2 | 6 | 12 | 1 |
| Greece | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
| WP: Hiroko Sakai (2-0) LP: Sarah Farnworth (2-3) |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Italy | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 |
| Japan | 0 | 0 | 1 | 0 | 0 | 0 | X | 1 | 8 | 1 |
| WP: Yukiko Ueno (1-2) LP: Jennifer Spediacci (1-2) |||||||||||
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| China | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Japan | 0 | 0 | 1 | 0 | 1 | 1 | X | 2 | 8 | 0 |
| WP: Yukiko Ueno (2-2) LP: Lu Wei (2-2) |||||||||||

### Semifinal

| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | R | H | E |
| Japan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 6 | 0 |
| China | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 |
| WP: Yukiko Ueno (3-2) LP: Lu Wei (2-3) ||||||||||||

### Bronze Medal Game

| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | R | H | E |
| Australia | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 4 | 0 |
| Japan | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 1 |
| WP: Tanya Harding (4-0) LP: Juri Takayama (1-2) |||||||||||

### Won Bronze Medal
## Swimming

Japanese swimmers earned qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard time, and 1 at the B-standard time):

### Men

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Genki Imamura | 200 m breaststroke | 2:14.10 | 11 Q | 2:12.86 | 11 | Did not advance | Did not advance |
| Kosuke Kitajima | 100 m breaststroke | 1:00.03 OR | 1 Q | 1:00.01 OR | 1 Q | 1:00.08 | |
| Kosuke Kitajima | 200 m breaststroke | 2:11.97 | 2 Q | 2:10.86 | 3 Q | 2:09.44 OR | |
| Takeshi Matsuda | 400 m freestyle | 3:49.05 AS | 8 Q | — | — | 3:48.96 AS | 8 |
| Takeshi Matsuda | 1500 m freestyle | 15:16.42 | 13 | — | — | Did not advance | Did not advance |
| Takeshi Matsuda | 200 m butterfly | 1:58.23 | 12 Q | 1:58.13 | 14 | Did not advance | Did not advance |
| Jiro Miki | 200 m individual medley | 2:00.93 | 4 Q | 2:01.09 | 8 Q | 2:02.16 | 8 |
| Jiro Miki | 400 m individual medley | 4:16.32 | 4 Q | — | — | 4:19.97 | 7 |
| Takahiro Mori | 200 m individual medley | 2:01.33 | 9 Q | 2:00.57 | 7 Q | 2:00.60 | 6 |
| Tomomi Morita | 100 m backstroke | 54.41 | 1 Q | 54.62 | 3 Q | 54.36 AS | |
| Tomomi Morita | 200 m backstroke | 2:01.19 | 16 Q | 1:59.52 | 8 Q | 1:58.40 AS | 5 |
| Yoshihiro Okumura | 100 m freestyle | 50.24 | 27 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yoshihiro Okumura | 200 m freestyle | 1:49.54 | 13 Q | 1:49.49 | 10 | Did not advance | Did not advance |
| Susumu Tabuchi | 400 m individual medley | 4:22.46 | 18 | — | — | Did not advance | Did not advance |
| Takashi Yamamoto | 100 m butterfly | 52.71 | 10 Q | 52.81 | 9 | Did not advance | Did not advance |
| Takashi Yamamoto | 200 m Butterfly | 1:57.36 | 2 Q | 1:56.69 | 4 Q | 1:54.56 AS | |
| Kosuke Kitajima Tomomi Morita Yoshihiro Okumura Takashi Yamamoto | 4 × 100 m medley relay | 3:37.04 | 4 Q | — | — | 3:35.22 | |

### Women

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Result | Rank | Result | Rank | Result | Rank |
| Misa Amano | 200 m individual medley | 2:17.88 | 17 | Did not advance | Did not advance | Did not advance | Did not advance |
| Misa Amano | 400 m individual medley | 4:45.61 | 10 | — | — | Did not advance | Did not advance |
| Noriko Inada | 100 m backstroke | 1:01.67 | 5 Q | 1:01.74 | 11 | Did not advance | Did not advance |
| Tomoko Nagai | 100 m freestyle | 55.76 | 12 Q | 56.03 | 16 | Did not advance | Did not advance |
| Tomoko Nagai | 200 m freestyle | 2:00.73 | 13 Q | 2:00.09 | 13 | Did not advance | Did not advance |
| Reiko Nakamura | 100 m backstroke | 1:01.39 | 2 Q | 1:01.24 | 8 Q | 1:01.05 | 4 |
| Reiko Nakamura | 200 m backstroke | 2:11.14 | 2 Q | 2:10.14 | 3 Q | 2:09.88 | |
| Yuko Nakanishi | 100 m butterfly | 1:00.16 | 17 Q | 59.53 | 14 | Did not advance | Did not advance |
| Yuko Nakanishi | 200 m butterfly | 2:10.04 | 2 Q | 2:08.83 | 2 Q | 2:08.04 | |
| Junko Onishi | 100 m butterfly | 59.22 | 7 Q | 59.24 | 8 Q | 59.83 | 8 |
| Yukiko Osada | 200 m butterfly | 2:11.20 | 8 Q | 2:11.35 | 13 | Did not advance | Did not advance |
| Ai Shibata | 400 m freestyle | 4:07.63 | 4 Q | — | — | 4:07.51 | 5 |
| Ai Shibata | 800 m freestyle | 8:30.08 | 3 Q | — | — | 8:24.54 | |
| Masami Tanaka | 100 m breaststroke | 1:09.44 | 10 Q | 1:09.11 | 9 | Did not advance | Did not advance |
| Masami Tanaka | 200 m breaststroke | 2:26.91 | 5 Q | 2:26.38 | 2 Q | 2:25.87 | 4 |
| Aya Terakawa | 200 m backstroke | 2:13.55 | 10 Q | 2:12.21 | 7 Q | 2:12.90 | 8 |
| Sachiko Yamada | 400 m freestyle | 4:09.10 | 8 Q | — | — | 4:10.91 | 6 |
| Sachiko Yamada | 800 m freestyle | 8:36.48 | 12 | — | — | Did not advance | Did not advance |
| Noriko Inada* Tomoko Nagai Reiko Nakamura Junko Onishi Masami Tanaka | 4 × 100 m medley relay | 4:05.99 | 6 Q | — | — | 4:04.83 | 5 |

## Synchronized swimming

Nine Japanese synchronized swimmers qualified a spot in the women's team.
| 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 |
| Miya Tachibana Miho Takeda | Duet | 49.000 | 2 | 49.000 | 98.000 | 2 Q | 49.417 | 98.417 | |
| Michiyo Fujimaru Saho Harada Naoko Kawashima Kanako Kitao Emiko Suzuki Miya Tachibana Miho Takeda Juri Tatsumi Yoko Yoneda | Team | 49.167 | 2 | — | — | — | 49.334 | 98.501 | |

## Table tennis

Eight Japanese table tennis players (five men and three women) qualified for the following events.

### Men

| Athlete | Event | 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 | Rank |
| Shu Arai | Singles | Liu S (ARG) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Koji Matsushita | Singles | Brown (AUS) W 4–0 | Heister (NED) W 4–0 | Ryu S-M (KOR) L 0–4 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Ryo Yuzawa | Singles | Lin J (DOM) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Shu Arai Ryo Yuzawa | Doubles | — | Boudjadja / Djaziri (ALG) W 4–0 | Boll / Fejer-Konnerth (GER) L 0–4 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Akira Kito Toshio Tasaki | Doubles | — | Bye | Gionis / Kreanga (GRE) W 4–3 | Grujić / Karakašević (SCG) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance |

### Women

| Athlete | Event | 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 | Rank |
| Ai Fujinuma | Singles | Bye | Wu X (DOM) W 4–0 | Liu J (AUT) W 4–3 | Zhang Xl (SIN) L 2–4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Ai Fukuhara | Singles | Bye | Miao (AUS) W 4-3 | Gao (USA) W 4–0 | Kim K-A (KOR) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Aya Umemura | Singles | Bye | Bye | Schöpp (GER) W 4–2 | Li Jw (SIN) L 2–4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Ai Fujinuma Aya Umemura | Doubles | Bye | Bye | Bye | Lau S F / Lin L (HKG) W 4–2 | Guo Y / Niu Jf (CHN) L 2–4 | Did not advance | Did not advance | Did not advance |

## Taekwondo

Japan has qualified one taekwondo jin.
| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Repechage 1 | Repechage 2 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Yoriko Okamoto | Women's +67 kg | Chen Z (CHN) L 5–7 | Did not advance | Did not advance | Carmona (VEN) L 2–5 | 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 |
| Shinobu Asagoe | Women's singles | Schiavone (ITA) L 3–6, 6–7$^{(4–7)}$ | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Akiko Morigami | Women's singles | Benešová (CZE) W 6–1, 6–4 | Kuznetsova (RUS) L 6–7$^{(5–7)}$, 2–6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Saori Obata | Women's singles | Matevžič (SLO) L 6–7$^{(3–7)}$, 5–7 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Ai Sugiyama | Women's singles | Zheng J (CHN) W 4–6, 6–3, 8–6 | Perebiynis (UKR) W 7–5, 6–4 | Šprem (CRO) W 7–6$^{(8–6)}$, 6–1 | Molik (AUS) L 3–6, 4–6 | Did not advance | Did not advance | Did not advance |
| Shinobu Asagoe Ai Sugiyama | Women's doubles | — | Dementieva / Myskina (RUS) W 5–7, 7–5, 6–3 | Kostanić / Šprem (CRO) W 6–3, 7–5 | Navratilova / Raymond (USA) W 6–4, 4–6, 6–4 | Martínez / Ruano Pascual (ESP) L 3–6, 0–6 | Suárez / Tarabini (ARG) L 3–6, 3–6 | 4 |
| Akiko Morigami Saori Obata | Women's doubles | — | Czink / Kapros (HUN) W 3–6, 7–5, 6–3 | Suárez / Tarabini (ARG) L 4–6, 2–6 | Did not advance | Did not advance | Did not advance | Did not advance |

## Triathlon

Five Japanese triathletes qualified for the following events.
| Athlete | Event | Swim (1.5 km) | Trans 1 | Bike (40 km) | Trans 2 | Run (10 km) | Total Time | Rank |
| Hiroyuki Nishiuchi | Men's | 18:20 | 0:18 | 1:05:34 | 0:19 | 33:49 | 1:57:43.51 | 32 |
| Hirokatsu Tayama | Men's | 18:03 | 0:17 | 1:01:43 | 0:17 | 33:42 | 1:53:28.41 | 13 |
| Machiko Nakanishi | Women's | 19:40 | 0:18 | 1:10:45 | 0:23 | 38:26 | 2:08:51.06 | 20 |
| Kiyomi Niwata | Women's | 20:35 | 0:22 | 1:09:54 | 0:23 | 37:13 | 2:07:42.79 | 14 |
| Akiko Sekine | Women's | 20:37 | 0:20 | 1:09:49 | 0:23 | 37:08 | 2:07:34.02 | 12 |

## Volleyball
### Beach

| Athlete | Event | Preliminary round | Standing | Round of 16 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Opposition Score | Standing | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Chiaki Kusuhara Ryoko Tokuno | Women's | Pool A May – Walsh (USA) L 0 – 2 (9–21, 16–21) Celbová – Nováková (CZE) L 0 – 2 (21–23, 12–21) Kadijk – Leenstra (NED) W 2 – 1 (15–21, 21–17, 15–13) | 3 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

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

The following is the Japanese roster in the women's volleyball tournament of the 2004 Summer Olympics.
Head coach: Shoichi Yanagimoto
| No. | Name | Date of birth | Height | Weight | Spike | Block | 2004 club |
| 1 | Tomoko Yoshihara (C) | 2 April 1970 | 1.80 m (5 ft 11 in) | 63 kg (139 lb) | 305 cm (120 in) | 295 cm (116 in) | Pioneer Red Wings |
| 2 | Chie Tsuji | 9 August 1969 | 1.77 m (5 ft 10 in) | 68 kg (150 lb) | 298 cm (117 in) | 285 cm (112 in) | Mobara Alcas |
| 3 | Ikumi Narita (L) | 1 January 1976 | 1.73 m (5 ft 8 in) | 67 kg (148 lb) | 299 cm (118 in) | 276 cm (109 in) | Hisamitsu Springs |
| 4 | Miki Sasaki | 15 December 1976 | 1.82 m (6 ft 0 in) | 76 kg (168 lb) | 317 cm (125 in) | 307 cm (121 in) | Pioneer Red Wings |
| 5 | Kanako Omura | 15 December 1976 | 1.84 m (6 ft 0 in) | 69 kg (152 lb) | 319 cm (126 in) | 290 cm (110 in) | Hisamitsu Springs |
| 7 | Yoshie Takeshita | 18 March 1978 | 1.59 m (5 ft 3 in) | 55 kg (121 lb) | 280 cm (110 in) | 270 cm (110 in) | JT Marvelous |
| 9 | Miyuki Takahashi | 25 December 1978 | 1.70 m (5 ft 7 in) | 68 kg (150 lb) | 285 cm (112 in) | 280 cm (110 in) | NEC Red Rockets |
| 12 | Sachiko Sugiyama | 19 October 1979 | 1.84 m (6 ft 0 in) | 69 kg (152 lb) | 310 cm (120 in) | 305 cm (120 in) | NEC Red Rockets |
| 13 | Ai Otomo | 24 March 1982 | 1.83 m (6 ft 0 in) | 71 kg (157 lb) | 312 cm (123 in) | 305 cm (120 in) | NEC Red Rockets |
| 14 | Kana Oyama | 19 June 1984 | 1.87 m (6 ft 2 in) | 82 kg (181 lb) | 308 cm (121 in) | 287 cm (113 in) | Toray Arrows |
| 16 | Megumi Kurihara | 31 July 1984 | 1.88 m (6 ft 2 in) | 68 kg (150 lb) | 305 cm (120 in) | 285 cm (112 in) | NEC Red Rockets |
| 18 | Saori Kimura | 19 August 1986 | 1.82 m (6 ft 0 in) | 66 kg (146 lb) | 298 cm (117 in) | 293 cm (115 in) | Shimokitazawa Seitoku |

##### Group play

| Pos | Teamvte | Pld | W | L | Pts | SW | SL | SR | SPW | SPL | SPR | Qualification |
| 1 | Brazil | 5 | 5 | 0 | 10 | 15 | 2 | 7.500 | 410 | 326 | 1.258 | Quarterfinals |
| 2 | Italy | 5 | 4 | 1 | 9 | 14 | 3 | 4.667 | 392 | 305 | 1.285 | Quarterfinals |
| 3 | South Korea | 5 | 3 | 2 | 8 | 9 | 7 | 1.286 | 355 | 352 | 1.009 | Quarterfinals |
| 4 | Japan | 5 | 2 | 3 | 7 | 6 | 10 | 0.600 | 346 | 343 | 1.009 | Quarterfinals |
| 5 | Greece | 5 | 1 | 4 | 6 | 5 | 12 | 0.417 | 349 | 383 | 0.911 | |
| 6 | Kenya | 5 | 0 | 5 | 5 | 0 | 15 | 0.000 | 236 | 379 | 0.623 | |

##### Quarterfinal
## Weightlifting

Four Japanese weightlifters qualified for the following events:
| Athlete | Event | Snatch | Snatch | Clean & Jerk | Clean & Jerk | Total | Rank |
| Athlete | Event | Result | Rank | Result | Rank | Total | Rank |
| Masaharu Yamada | Men's −56 kg | 102.5 | DNF | — | — | — | DNF |
| Toshio Imamura | Men's −62 kg | 120 | =12 | 150 | =12 | 270 | 11 |
| Takanobu Iwazaki | Men's +105 kg | 170 | 14 | 215 | 12 | 385 | 12 |
| Hiromi Miyake | Women's −48 kg | 77.5 | =9 | 97.5 | 8 | 175 | 9 |

## Wrestling

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 | Elimination Pool | Elimination Pool | Elimination Pool | Elimination Pool | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Rank | Opposition Result | Opposition Result | Opposition Result | Rank |
| Chikara Tanabe | −55 kg | Abdullayev (AZE) W 3–1 $^{PP}$ | Dutt (IND) W 3–1 $^{PP}$ | — | 1 Q | Kim H-S (KOR) W 4–0 $^{ST}$ | Abas (USA) L 0–3 $^{PO}$ | Kardanov (GRE) W 3–0 $^{PO}$ | |
| Kenji Inoue | −60 kg | Zakhartdinov (UZB) L 1–3 $^{PP}$ | Jung Y-H (KOR) W 3–1 $^{PP}$ | Cikel (AUT) W 4–0 $^{ST}$ | 1 Q | Bye | Mostafa-Jokar (IRI) L 1–3 $^{PP}$ | Fedoryshyn (UKR) W 3–1 $^{PP}$ | |
| Kazuhiko Ikematsu | −66 kg | Jessey (NGR) W 5–0 $^{VT}$ | Baek J-K (KOR) W 3–1 $^{PP}$ | — | 1 Q | Spiridonov (KAZ) L 1–3 $^{PP}$ | Did not advance | Taskoudis (GRE) W 3–1 $^{PP}$ | 5 |
| Kunihiko Obata | −74 kg | Maan (IND) W 3–0 $^{PO}$ | Fundora (CUB) L 0–3 $^{PO}$ | — | 2 | Did not advance | Did not advance | Did not advance | 12 |
| Hidekazu Yokoyama | −84 kg | Khodaei (IRI) L 1–3 $^{PP}$ | Kumar (IND) W 3–1 $^{PP}$ | — | 2 | Did not advance | Did not advance | Did not advance | 10 |

### Men's Greco-Roman

| Athlete | Event | Elimination Pool | Elimination Pool | Elimination Pool | Elimination Pool | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Rank | Opposition Result | Opposition Result | Opposition Result | Rank |
| Masatoshi Toyota | −55 kg | Majoros (HUN) L 1–3 $^{PP}$ | Ramírez (DOM) W 4–0 $^{ST}$ | — | 2 | Did not advance | Did not advance | Did not advance | 10 |
| Makoto Sasamoto | −60 kg | Guzman (PER) W 4–0 $^{ST}$ | Štefanek (SCG) W 3–1 $^{PP}$ | — | 1 Q | Nazaryan (BUL) L 1–3 $^{PP}$ | Did not advance | Koizhaiganov (KAZ) W 3–0 $^{PO}$ | 5 |
| Katsuhiko Nagata | −74 kg | Kobonov (KGZ) L 1–3 $^{PP}$ | Yli-Hannuksela (FIN) L 0–3 $^{PO}$ | — | 3 | Did not advance | Did not advance | Did not advance | 16 |
| Shingo Matsumoto | −84 kg | Abrahamian (SWE) L 0–3 $^{PO}$ | Kenjeev (KGZ) W 3–1 $^{PP}$ | Bátky (SVK) W 3–1 $^{PP}$ | 2 | Did not advance | Did not advance | Did not advance | 7 |

### Women's freestyle

| Athlete | Event | Elimination Pool | Elimination Pool | Elimination Pool | Classification | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Rank | Opposition Result | Opposition Result | Opposition Result | Rank |
| Chiharu Icho | −48 kg | Belisle (CAN) W 4–0 $^{ST}$ | Wagner (GER) W 5–0 $^{VT}$ | 1 Q | Bye | Berthenet (FRA) W 4–1 $^{SP}$ | Merleni (UKR) L 1–3 $^{PP}$ | |
| Saori Yoshida | −55 kg | Sun Dm (CHN) W 4–0 $^{ST}$ | Giampiccolo (ITA) W 4–0 $^{ST}$ | 1 Q | Bye | Gomis (FRA) W 3–1 $^{PP}$ | Verbeek (CAN) W 3–0 $^{PO}$ | |
| Kaori Icho | −63 kg | Holovchenko (UKR) W 4–0 $^{ST}$ | Kartashova (RUS) W 3–1 $^{PP}$ | 1 Q | Bye | Legrand (FRA) W 3–0 $^{PO}$ | McMann (USA) W 3–1 $^{PP}$ | |
| Kyoko Hamaguchi | −72 kg | Montgomery (USA) W 3–1 $^{PP}$ | Zlateva (BUL) W 4–0 $^{ST}$ | 1 Q | Bye | Wang X (CHN) L 1–3 $^{PP}$ | Saenko (UKR) W 3–0 $^{PO}$ | |