2003 Cork Senior Hurling Championship
The 2004 Cork Senior Hurling Championship was the 115th staging of the Cork Senior Hurling Championship since its establishment by the Cork County Board in 1887. The draw for the 2003 opening round fixtures took place in December 2002. The championship began on 26 April 2003 and ended on 12 October 2003.
Blackrock entered the championship as the defending champions.
On 12 October 2003, Newtownshandrum won the championship following a 0-17 to 1-9 defeat of Blackrock in the final. This was their second championship title overall and their first title since 2000.
Newtownshandrum's Ben O'Connor was the championship's top scorer with 2-38.Team changes
To Championship
Promoted from the Cork Intermediate Hurling Championship
Preliminary round
Round 1
Round 2
Round 3
Quarter-finals
Semi-finals
Final
Championship statistics
Top scorers
;Overall
| Rank | Player | Club | Tally | Total | Matches | Average |
| 1 | Ben O'Connor | Newtownshandrum | 2-38 | 44 | 6 | 7.33 |
| 2 | Neil Ronan | Ballyhea | 2-32 | 38 | 4 | 9.50 |
| 3 | Adrian Coughlan | Blackrock | 2-25 | 31 | 5 | 6.20 |
| 4 | Conor Cusack | Cloyne | 8-06 | 30 | 5 | 6.00 |
| 4 | Pat Ryan | Sarsfields | 0-30 | 30 | 6 | 5.00 |
| 5 | Mickey O'Connell | Midleton | 0-28 | 28 | 5 | 5.60 |
| 6 | Johnny Murphy | Sarsfields | 3-18 | 27 | 6 | 4.50 |
| 6 | Jonathan O'Callaghan | Avondhu | 1-24 | 27 | 3 | 9.00 |
| 7 | Liam Walsh | Midleton | 0-25 | 25 | 5 | 5.00 |
| 8 | Brian O'Keeffe | Blackrock | 4-09 | 21 | 5 | 4.20 |
;In a single game
| Rank | Player | Club | Tally | Total | Opposition |
| 1 | Setanta Ó hAilpín | Na Piarsaigh | 3-07 | 16 | Douglas |
| 2 | Conor Cusack | Cloyne | 4-02 | 14 | Ballyhea |
| 3 | Alan Browne | Blackrock | 3-02 | 11 | Delanys |
| 3 | Noel Maloney | UCC | 1-08 | 11 | Killeagh |
| 4 | Mark O'Sullivan | Muskerry | 3-01 | 10 | Duahllow |
| 4 | Seán O'Farrell | Imokilly | 3-01 | 10 | Na Piarsaigh |
| 4 | Brian O'Keeffe | Blackrock | 3-01 | 10 | Imokilly |
| 4 | Johnny Murphy | Sarsfields | 2-04 | 10 | UCC |
| 4 | Adrian Coughlan | Blackrock | 1-07 | 10 | Delanys |
| 4 | Jonathan O'Callaghan | Avondhu | 0-10 | 10 | St. Catherine's |
| 4 | Jonathan O'Callaghan | Avondhu | 0-10 | 10 | Seandún |
| 4 | Ben O'Connor | Newtownshandrum | 0-10 | 10 | Blackrock |
