| 2nd Copa del Rey | |
|---|---|
 | |
| Tournament details | |
| Country | Spain |
| Teams | 4 |
| Defending champions | Athletic Bilbao (2nd title) |
| Final positions | |
| Champions | Athletic Bilbao |
| Runner-up | Club Español de Madrid |
| Tournament statistics | |
| Matches played | 3 |
| Goals scored | 15 (5 per match) |
The Copa del Rey 1904 was the second staging of the Copa del Rey, the Spanish football cup competition.
The competition was played in 1904 in Madrid. It was notable for its chaotic development and the fact that Athletic Bilbao won the trophy without playing a game.