2003 Railway Cup Hurling Championship
The 2003 Railway Cup Hurling Championship was the 76th series of the inter-provincial hurling Railway Cup. Three matches were played between 18 October 2003 and 8 November 2003 to decide the title. It was contested by Connacht, Leinster, Munster and Ulster.
Leinster entered the championship as the defending champions.
On 8 November 2003, Leinster won the Railway Cup after a 4-09 to 2-12 defeat of Connacht in the final at the Giulio Onesti Sports Complex in Rome. It was their 23rd Railway Cup title overall and their second title in succession.
Leinster's Henry Shefflin and Connacht's Eugene Cloonan were the Railway Cup joint top scorers.Results
Semi-finals
FinalTop scorers
;Overall
| Rank | Player | County | Tally | Total | Matches | Average |
| 1 | Henry Shefflin | Leinster | 4-06 | 18 | 2 | 9.00 |
| 1 | Eugene Cloonan | Connacht | 3-09 | 18 | 2 | 9.00 |
| 2 | John Hoyne | Leinster | 2-02 | 9 | 2 | 4.00 |
| 3 | Tommy Walsh | Leinster | 1-04 | 7 | 2 | 3.50 |
| 3 | Mark Kerins | Connacht | 0-07 | 7 | 2 | 3.50 |
| 3 | Eoin Kelly | Munster | 0-07 | 7 | 1 | 7.00 |
;Single game
| Rank | Player | County | Tally | Total | Opposition |
| 1 | Henry Shefflin | Leinster | 2-04 | 10 | Ulster |
| 2 | Eugene Cloonan | Connacht | 2-03 | 9 | Munster |
| 2 | Eugene Cloonan | Connacht | 1-06 | 9 | Leinster |
| 3 | Henry Shefflin | Leinster | 2-02 | 8 | Connacht |
| 4 | Eoin Kelly | Munster | 0-07 | 7 | Leinster |
| 5 | Tommy Walsh | Leinster | 1-02 | 5 | Ulster |
| 5 | Mark Kerins | Connacht | 0-05 | 5 | Munster |
