Badminton
- Men
| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final | |
|---|---|---|---|---|---|---|---|
| Rank | |||||||
| Shōji Satō | Singles | Bao (CHN) L 6-15, 5-15 |
Did not advance | ||||
| Hidetaka Yamada | Hidayat (INA) L 8-15, 10-15 |
Did not advance | |||||
| Keita Masuda Tadashi Ohtsuka |
Doubles | Cai/Fu (CHN) L 7-15, 17-16, 9-15 |
Did not advance | ||||
- Women
| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final | |
|---|---|---|---|---|---|---|---|
| Rank | |||||||
| Kaori Mori | Singles | Nieminen (FIN) W 11-5, 11-4 |
Zhou (CHN) L 2-11, 4-11 |
Did not advance | |||
| Miho Tanaka | Ponsana (INA) L 7-11, 11-5, 8-11 |
Did not advance | |||||
| Kanako Yonekura | Martin (DEN) L 4-11, 7-11 |
Did not advance | |||||
| Chikako Nakayama Keiko Yoshitomi |
Doubles | Chankrachangwong/ Thungthongkam (THA) L 4-15, 11-15 |
Did not advance | ||||
| Seiko Yamada Shizuka Yamamoto |
Chin/Wong (MAS) L 7-15, 9-15 |
Did not advance | |||||
- Mixed Doubles
| Athlete | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final | |
|---|---|---|---|---|---|---|
| Rank | ||||||
| Tadashi Ohtsuka Shizuka Yamamoto |
Blair/Munt (GBR) L 15-13, 7-15, 13-15 |
Did not advance | ||||
Read more about this topic: Japan At The 2004 Summer Olympics