2004 All-Ireland Under-21 Hurling Championship
The 2004 All-Ireland Under-21 Hurling Championship was the 41st staging of the All-Ireland Under-21 Hurling Championship, the Gaelic Athletic Association's premier inter-county hurling tournament for players under the age of twenty-one. The championship began on 2 June 2004 and ended on 18 September 2004.
Kilkenny were the defending champions.
The All-Ireland final was played on 18 September 2004 at Nowlan Park in Kilkenny, between Kilkenny and Tipperary, in what was their first meeting in a final in 9 years. Kilkenny won the match by 3-21 to 1-06 to claim their 9th championship title overall and a second title in succession.
Tipperary's Tony Scroope was the championship's top scorer with 5-20.
Results
[Leinster Under-21 Hurling Championship]
Quarter-finalSemi-finals
'''Final'''
[Munster Under-21 Hurling Championship]
Quarter-finalsSemi-finals
'''Final'''
[Ulster Under-21 Hurling Championship]
Semi-final'''Final'''
[All-Ireland Under-21 Hurling Championship]
Semi-finals'''Final'''
Championship statistics
Top scorers
;Top scorers overall| Rank | Player | County | Tally | Total | Matches | Average |
| 1 | Tony Scroope | Tipperary | 5-20 | 35 | 4 | 8.75 |
| 2 | James Fitzpatrick | Kilkenny | 1-29 | 32 | 5 | 6.40 |
| 3 | Kieran Murphy | Cork | 1-13 | 16 | 3 | 5.33 |
| 4 | Eoin Clarke | Down | 3-06 | 15 | 3 | 5.00 |
| 4 | Richie Power | Kilkenny | 1-12 | 15 | 5 | 3.00 |
| 6 | Willie O'Dwyer | Kilkenny | 1-11 | 14 | 5 | 2.80 |
| 7 | J. J. McHugh | Laois | 1-10 | 13 | 1 | 13.00 |
| 7 | Brendan McGourty | Down | 0-13 | 13 | 2 | 6.50 |
| 9 | Rory Jacob | Wexford | 1-08 | 11 | 2 | 5.50 |
| 10 | Seán O'Neill | Kilkenny | 0-10 | 10 | 2 | 5.00 |
;Top scorers in a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | J. J. McHugh | Laois | 1-10 | 13 | Kilkenny |
| 2 | Tony Scroope | Tipperary | 3-03 | 12 | Limerick |
| 2 | Tony Scroope | Tipperary | 1-09 | 12 | Down |
| 4 | Eoin Clarke | Down | 3-02 | 11 | Derry |
| 4 | James Fitzpatrick | Kilkenny | 0-11 | 11 | Laois |
| 4 | Brendan McGourty | Down | 0-11 | 11 | Antrim |
| 7 | Tony Scroope | Tipperary | 1-06 | 9 | Cork |
| 8 | Karl Stewart | Antrim | 1-05 | 8 | Down |
| 8 | James Fitzpatrick | Kilkenny | 0-08 | 8 | Galway |
| 10 | Conor Quinn | Derry | 2-01 | 7 | Down |
| 10 | Rory Jacob | Wexford | 0-07 | 7 | Offaly |
| 10 | Kieran Murphy | Cork | 0-07 | 7 | Waterford |
| 10 | Richie Power | Kilkenny | 0-07 | 7 | Tipperary |