| Tournament details | |
|---|---|
| Venue(s) | Charlottetown Civic Centre in Charlottetown, Prince Edward Island |
| Dates | May 3, 2003 – May 11, 2003 |
| Teams | 5 |
| Final positions | |
Champions  | Humboldt Broncos (1st title) |
Runner-up  | Camrose Kodiaks |
| Tournament statistics | |
| Games played | 13 |
| Scoring leader(s) | Josh Podaima (Humboldt) |
| MVP | Craig Olynick (Humboldt) |
The 2003 Royal Bank Cup was the 33rd Junior "A" 2003 ice hockey National Championship for the Canadian Junior A Hockey League.
The Royal Bank Cup was competed for by the winners of the Doyle Cup, Anavet Cup, Dudley Hewitt Cup, the Fred Page Cup and a host city.
The tournament was hosted by the Charlottetown Abbies in Charlottetown, Prince Edward Island.