Quarter-finals
Matches played on 4 July and 5 July 2005.
| Tie no | Home team | Score | Away team |
|---|---|---|---|
| 1 | UCD | 1-0 | Waterford United |
| 2 | Shelbourne | 2-1 | St Patrick's Athletic |
| 3 | Cork City | 0-1 | Longford Town |
| 4 | Derry City | 2-2 | Drogheda United |
| Derry City won 5-4 on penalties | |||
Read more about this topic: 2005 League Of Ireland Cup