2003 Waterford Senior Hurling Championship
The 2003 Waterford Senior Hurling Championship was the 103rd staging of the Waterford Senior Hurling Championship since its establishment by the Waterford County Board in 1897. The championship began on 15 August 2003 and ended on 9 November 2003.
Mount Sion were the defending champions.
On 9 November 2003, Mount Sion won the championship after a 1–14 to 1–10 defeat of Ballygunner in a final replay at Walsh Park. It was their 33rd championship title overall and their second title in succession.
Lismore's Seán Daly was the championship's top scorer with 6–20.
Team changes
To Championship
Promoted from the Waterford Intermediate Hurling ChampionshipFrom Championship
Relegated to the Waterford Intermediate Hurling ChampionshipChampionship statistics
Top scorers
;Top scorers overall| Rank | Player | Club | Tally | Total | Matches | Average |
| 1 | Seán Daly | Lismore | 6–20 | 38 | 6 | 6.33 |
| 2 | Paul Flynn | Ballygunner | 4–21 | 33 | 5 | 6.60 |
| 2 | John Mullane | De La Salle | 3–24 | 33 | 4 | 8.25 |
| 3 | James Cuddihy | Ballyduff Lower | 2–26 | 32 | 5 | 6.40 |
| 4 | Dave Bennett | Lismore | 1–28 | 31 | 6 | 5.16 |
| 5 | John Heneghan | Lismore | 4–11 | 23 | 6 | 3.83 |
| 5 | Eoin Kelly | Mount Sion | 0–23 | 23 | 5 | 4.60 |
| 6 | Dan Shanahan | Lismore | 1–19 | 22 | 5 | 4.40 |
| 6 | Paul Kearney | Tallow | 0–22 | 22 | 4 | 5.50 |
| 7 | Séamus Prendergast | Ardmore | 1–17 | 20 | 3 | 6.66 |
;Top scorers in a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Paul Flynn | Ballygunner | 2–06 | 12 | Mount Sion |
| 1 | John Mullane | De La Salle | 1–09 | 12 | Tallow |
| 2 | Seán Daly | Lismore | 2–05 | 11 | Portlaw |
| 2 | Seán Daly | Lismore | 2–05 | 11 | Mount Sion |
| 3 | Paul Flynn | Ballygunner | 2-04 | 10 | De La Salle |
| 3 | Dave Bennett | Lismore | 1–07 | 10 | De La Salle |
| 4 | Barry Browne | Mount Sion | 2–03 | 9 | Lismore |
| 4 | James Cuddihy | Ballyduff Lower | 1–06 | 9 | Tallow |
| 4 | Shane Walsh | Fourmilewater | 1–06 | 9 | Ballyduff Lower |
| 5 | James Cuddihy | Ballyduff Lower | 1–05 | 8 | Ardmore |
| 5 | Freddie Kelly | Portlaw | 1–05 | 8 | Ballyduff Lower |
| 5 | John Mullane | De La Salle | 1–05 | 8 | Ballygunner |
| 5 | Tom Curran | Stradbally | 0–08 | 8 | Portlaw |
| 5 | Séamus Prendergast | Ardmore | 0–08 | 8 | Ballyduff Lower |
| 5 | Eoin Kelly | Mount Sion | 0–08 | 8 | Ballygunner |