| Tournament details | |
|---|---|
| Venue(s) | Weyburn, Saskatchewan |
| Dates | May 1984 |
| Teams | 2 |
| Final positions | |
Champions  | Weyburn Red Wings (1st title) |
Runner-up  | Orillia Travelways |
| Tournament statistics | |
| Games played | 7 |
| MVP | Ron Amyotte (Weyburn) |
The 1984 Centennial Cup is the 14th Junior "A" 1984 ice hockey National Championship for the Canadian Junior A Hockey League.
The Centennial Cup was competed for by the winners of the Abbott Cup/Western Canadian Champions and the Eastern Canadian Jr. A Champions. The Maritimes champions did not compete for the Eastern championship.
The finals were hosted by the Weyburn Red Wings in the city of Weyburn, Saskatchewan.