| Tournament details | |
|---|---|
| Venue(s) | Vernon, British Columbia |
| Dates | May 1990 |
| Teams | 5 |
| Final positions | |
Champions  | Vernon Lakers (1st title) |
Runner-up  | New Westminster Royals |
| Tournament statistics | |
| Games played | 13 |
| Scoring leader(s) | Kelly Jones (New Westminster) |
| MVP | Marc Alain Duchaine (Longueuil) |
The 1990 Centennial Cup is the 20th Junior "A" 1990 ice hockey National Championship for the Canadian Junior Hockey League.
The Centennial Cup was competed for by the winners of the Doyle Cup, Anavet Cup, Dudley Hewitt Cup, the Callaghan Cup, and a host city.
The tournament was hosted by the Vernon Lakers and Vernon, British Columbia.