| Tourney Name: | A3 Champions Cup |
| Year: | 2004 |
| Other Titles: | A3 Nissan Cup 2004 |
| Country: | China |
| Dates: | 22 – 28 February |
| Confederations: | 1 |
| Num Teams: | 4 |
| Venues: | 1 |
| Cities: | 1 |
| Count: | 1 |
| Matches: | 6 |
| Goals: | 13 |
| Top Scorer: |  Kim Do-Hoon (Seongnam Ilhwa, 2 goals) |
| Player: | Kim Do-Hoon (Seongnam Ilhwa) |
| Prevseason: | 2003 |
| Nextseason: | 2005 |
The 2004 A3 Champions Cup was second edition of A3 Champions Cup. It was held from February 22 to 28, 2003 in Shanghai, China PR.
Shanghai Shenhua - 2003 Chinese Jia-A League Champions Shanghai International - 2003 Chinese Jia-A League Runners-up
Yokohama F. Marinos - 2003 J. League Champions Seongnam Ilhwa Chunma - 2003 K-League Champions| width=200 | Team | width=20 | width=20 | width=20 | width=20 | width=20 | width=20 | width=20 | width=20 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seongnam Ilhwa Chunma | 3 | 2 | 1 | 0 | 5 | 1 | +4 | 7 | |||||||||
| Yokohama F. Marinos | 3 | 2 | 0 | 1 | 4 | 4 | 0 | 6 | |||||||||
| Shanghai Shenhua | 3 | 0 | 2 | 1 | 2 | 4 | −2 | 2 | |||||||||
| Shanghai International | 3 | 0 | 1 | 2 | 2 | 4 | −2 | 1 |
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