| Tournament details | |
|---|---|
| Venue(s) |  Aitken University Centre,  Fredericton, New Brunswick  | 
| Teams | 6 | 
| Final positions | |
| Champions | Quebec–Trois-Rivières Patriotes (4th title) | 
| Runners-up | St. Francis Xavier X-Men | 
| Third place | Alberta Golden Bears | 
| Fourth place | New Brunswick Varsity Reds | 
| Tournament statistics | |
| Games played | 8 | 
| Awards | |
| MVP | Éric Desjardins (Quebec–Trois-Rivières) | 
The 2003 CIS Men's University Cup Hockey Tournament (41st annual) was held at the Aitken University Centre in Fredericton, New Brunswick. The New Brunswick Varsity Reds served as tournament host.
| Quarterfinals | Semifinals | Championship | ||||||||||||||||||||
| 1 | St. Thomas | 3 | 2 | 1 | ||||||||||||||||||
| 3 | St. Francis Xavier | 3 | 4 | — | 4 | New Brunswick | 5 | 1 | 4 | |||||||||||||
| 6 | Prince Edward Island | 0 | 0 | — | 4 | New Brunswick | 3 | 2 | 5 | 4 | — | |||||||||||
| 3 | St. Francis Xavier | 1 | 4 | 3 | 3 | — | ||||||||||||||||
| 2 | Dalhousie | 4 | 1 | 4 | ||||||||||||||||||
| 4 | New Brunswick | 2 | 3 | — | 3 | St. Francis Xavier | 0 | 3 | 6 | |||||||||||||
| 5 | Saint Mary’s | 0 | 1 | — | ||||||||||||||||||
Note: * denotes overtime period(s)
| Division Semifinals | Division Finals | Semifinals | Gold Medal Game | ||||||||||||||||||||
| FE1 | Quebec–Trois-Rivières | 11 | 2 | — | |||||||||||||||||||
| FE2 | McGill | 2 | 2 | — | FE3 | Ottawa | 2 | 1 | — | ||||||||||||||
| FE3 | Ottawa | 3 | 3 | — | East | FE1 | Quebec–Trois-Rivières | 6 | |||||||||||||||
| ME1 | Toronto | 3 | |||||||||||||||||||||
| ME1 | Toronto | 1 | 0 | 5 | |||||||||||||||||||
| ME2 | Queen's | 4 | 3 | — | ME2 | Queen's | 0 | 2 | 1 | ||||||||||||||
| ME3 | Royal Military College | 1 | 2 | — | FE1 | Quebec–Trois-Rivières | 7 | ||||||||||||||||
| MW1 | York | 4 | |||||||||||||||||||||
| MW1 | York | 5 | 3 | 5 | |||||||||||||||||||
| MW2 | Wilfrid Laurier | 5 | 2 | — | MW2 | Wilfrid Laurier | 4 | 5 | 0 | ||||||||||||||
| MW3 | Brock | 2 | 1 | — | West | MW1 | York | 4 | Bronze Medal Game | ||||||||||||||
| FW2 | Lakehead | 1 | |||||||||||||||||||||
| FW1 | Western Ontario | 2 | 1 | — | ME1 | Toronto | 5 | ||||||||||||||||
| FW2 | Lakehead | 4 | 11 | — | FW2 | Lakehead | 5 | 2 | — | FW2 | Lakehead | 6 | |||||||||||
| FW3 | Windsor | 2 | 2 | — | |||||||||||||||||||
Note: * denotes overtime period(s)
| Division Semifinal | Division Final | Championship | ||||||||||||||||||
| G1 | Saskatchewan | 5 | 5 | — | ||||||||||||||||
| G2 | Manitoba | 6 | 4 | — | G2 | Manitoba | 3 | 0 | — | |||||||||||
| G3 | Regina | 2 | 0 | — | G1 | Saskatchewan | 4 | 2 | 2 | |||||||||||
| M1 | Alberta | 2 | 4 | 5 | ||||||||||||||||
| M1 | Alberta | 7 | 5 | — | ||||||||||||||||
| M2 | Calgary | 2 | 2 | 6 | M2 | Calgary | 2 | 2 | — | |||||||||||
| M3 | Lethbridge | 1 | 5 | 4 | ||||||||||||||||
Note: * denotes overtime period(s)
The rotating wild-card moved to OUA. In order to determine which team received the bid, the conference reintroduced a third-place game. Because AUS was serving as the host conference, they automatically received two bids. The teams were ranked with preference given to avoiding intra-conference matches in pool play. A consolation game was reintroduced for the first time since 1972.
| Seed | Team | Qualification | Record | Appearance | Last | 
|---|---|---|---|---|---|
| 1 | Alberta Golden Bears | West: Canada West Champion | 28–3–2 | 28th | 2002 | 
| 2 | Quebec–Trois-Rivières Patriotes | Quebec: OUA Champion | 24–2–2 | 13th | 2002 | 
| 3 | New Brunswick Varsity Reds | Atlantic: AUS Champion / Host | 22–14–1 | 7th | 2000 | 
| 4 | York Lions | Ontario: OUA Runner-up | 20–8–1 | 9th | 1999 | 
| 5 | St. Francis Xavier X-Men | Wild-card: AUS Runner-up | 19–16–2 | 8th | 2001 | 
| 6 | Lakehead Thunderwolves | Wild-card: OUA Third place | 23–7–0 | 2nd | 1973 | 
| Pool A | ALB | YOR | SFX | Overall | |
| 1 | Alberta | W 4–0 | L 2–3 | 1–1 | |
|---|---|---|---|---|---|
| 4 | York | L 0–4 | L 4–5 | 0–2 | |
| 5 | St. Francis Xavier | W 3–2 | W 5–4 | 2–0 | 
| Pool B | QTR | UNB | LAK | Overall | |
| 2 | Quebec–Trois-Rivières | W 4–3 | W 2–1 | 2–0 | |
|---|---|---|---|---|---|
| 3 | New Brunswick | L 3–4 | W 4–3 | 1–1 | |
| 6 | Lakehead | L 1–2 | L 3–4 | 0–2 | 
| Gold Medal Game | ||||
| 2 | Quebec–Trois-Rivières | 3 | ||
| 5 | St. Francis Xavier | 0 | ||
| Bronze Medal Game | ||||
| 1 | Alberta | 8 | ||
| 3 | New Brunswick | 2 | ||
Note: * denotes overtime period(s) [1]
| #2 Quebec–Trois-Rivières Patriotes | 3–0 | #5 St. Francis Xavier X-Men | Aitken University Centre, Fredericton, New Brunswick |