| J.League Cup | |
| Year: | 2004 |
| Other Titles: | J.League Yamazaki Nabisco Cup |
| Country: | Japan |
| Dates: | 27 March 2004 and 3 November 2004 |
| Champions: | FC Tokyo |
| Count: | 1 |
| Runner-Up: | Urawa Red Diamonds |
| Semi-Finalist1: | Nagoya Grampus Eight |
| Semi-Finalist2: | Tokyo Verdy 1969 |
| Player Label: | MVP Award |
| Prevseason: | 2003 |
| Nextseason: | 2005 |
The J. League Cup 2004, officially the 2004 J.League Yamazaki Nabisco Cup, was the 2nd edition of Japan soccer league cup tournament and the 12th edition under the current J. League Cup format. The championship started on March 27, and finished on November 3, 2004.
Teams from the J1 took part in the tournament. The tournament started from the group stage, where they're divided into four groups. The group winners and runners-up of each group qualifies for the quarter final.
| 2004-03-27 | |||
| Jubilo Iwata | 0–0 | Albirex Niigata | |
| Gamba Osaka | 1–3 | Nagoya Grampus Eight | |
| 2004-04-29 | |||
| Albirex Niigata | 4–4 | Gamba Osaka | |
| Nagoya Grampus Eight | 5–2 | Jubilo Iwata | |
| 2004-05-29 | |||
| Jubilo Iwata | 0–1 | Gamba Osaka | |
| Nagoya Grampus Eight | 1–2 | Albirex Niigata | |
| 2004-06-05 | |||
| Gamba Osaka | 2–3 | Jubilo Iwata | |
| Albirex Niigata | 0–1 | Nagoya Grampus Eight | |
| 2004-07-17 | |||
| Albirex Niigata | 1–1 | Jubilo Iwata | |
| Nagoya Grampus Eight | 2–2 | Gamba Osaka | |
| 2004-07-24 | |||
| Jubilo Iwata | 1–1 | Nagoya Grampus Eight | |
| Gamba Osaka | 2–0 | Albirex Niigata |
| 2004-03-27 | |||
| Urawa Red Diamonds | 2–3 | Oita Trinita | |
| JEF United Ichihara | 4–0 | Shimizu S-Pulse | |
| 2004-04-29 | |||
| Shimizu S-Pulse | 2–0 | Urawa Red Diamonds | |
| Oita Trinita | 1–4 | JEF United Ichihara | |
| 2004-05-29 | |||
| Shimizu S-Pulse | 3–2 | JEF United Ichihara | |
| Oita Trinita | 0–3 | Urawa Red Diamonds | |
| 2004-06-05 | |||
| JEF United Ichihara | 2–0 | Oita Trinita | |
| Urawa Red Diamonds | 3–0 | Shimizu S-Pulse | |
| 2004-07-17 | |||
| Urawa Red Diamonds | 2–1 | JEF United Ichihara | |
| Shimizu S-Pulse | 1–0 | Oita Trinita | |
| 2004-07-24 | |||
| JEF United Ichihara | 1–2 | Urawa Red Diamonds | |
| Oita Trinita | 0–2 | Shimizu S-Pulse |
| 2004-03-27 | |||
| Vissel Kobe | 1–0 | Kashiwa Reysol | |
| FC Tokyo | 1–2 | Kashima Antlers | |
| 2004-04-29 | |||
| Kashima Antlers | 1–2 | FC Tokyo | |
| Kashiwa Reysol | 1–1 | Vissel Kobe | |
| 2004-05-29 | |||
| Vissel Kobe | 0–3 | Kashima Antlers | |
| Kashiwa Reysol | 0–2 | FC Tokyo | |
| 2004-06-05 | |||
| Kashima Antlers | 0–2 | Kashiwa Reysol | |
| FC Tokyo | 2–1 | Vissel Kobe | |
| 2004-07-17 | |||
| Kashiwa Reysol | 0–0 | Kashima Antlers | |
| Vissel Kobe | 1–2 | FC Tokyo | |
| 2004-07-24 | |||
| Kashima Antlers | 2–0 | Vissel Kobe | |
| FC Tokyo | 1–1 | Kashiwa Reysol |
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See main article: 2004 J.League Cup Final.
| Goalscorers | Goals | Team | |
|---|---|---|---|
 Ueslei | Nagoya Grampus Eight | ||
| Lucas | FC Tokyo | ||
| Marques | Nagoya Grampus Eight |