| Copa del Rey Juvenil | |
| Year: | 2003 |
| Country: | Spain |
| Num Teams: | 16 |
| Champions: | Espanyol |
| Runner-Up: | Mallorca |
| Matches: | 29 |
| Goals: | 94 |
| Prevseason: | 2002 |
| Nextseason: | 2004 |
The 2003 Copa del Rey Juvenil was the 53rd staging of the tournament. The competition began on May 18, 2003, and ended on June 29, 2003, with the final.
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Tato Burgada 
Iván Merino