| Tourney Name: | CERS Cup |
| Year: | 2002–03 |
| Dates: | 30 November 2002– 26 April 2003 |
| Num Teams: | 25 |
| Associations: | 7 |
| Champion Other: |  Reus Deportiu |
| Count: | 1 |
| Second Other: | Lleida |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |
The 2002–03 CERS Cup was the 23rd season of the CERS Cup, Europe's second club roller hockey competition organized by CERH. 25 teams from seven national associations qualified for the competition as a result of their respective national league placing in the previous season. Following a preliminary phase and four knockout rounds, Reus Deportiu won its first title.
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