The 2002–03 European Challenge Cup (known as the Parker Pen Challenge Cup for sponsorship reasons) was the 7th season of the European Challenge Cup, Europe's second-tier club rugby union competition below the Heineken Cup. A total of 32 teams participated, representing eight countries.
Unlike previous seasons, the structure of the competition was changed to a purely knockout format. Teams played each other on a home and away basis, with the aggregate points winner proceeding to the next round. The final was a single leg. For that first time, a third tier tournament was created - the European Shield. This was contested between the first-round losers from the European Challenge Cup.[3]
The defending champions, England'sSale Sharks, did not have a chance to defend their crown because they qualified to play in the Heineken Cup. London Wasps claimed a victory over Bath in the final and picked up their first piece of European Club silverware.