| Penalties | Players | Club | VS Club | Date | |
|---|---|---|---|---|---|
| 5 |  Matthew Jones | Ospreys | Scarlets | 07-05-2005 | Match details |
| 3 | Dan Parks | Glasgow Warriors | Leinster | 29-04-2005 | Match details |
| 3 | Matthew Jones | Ospreys | Ulster | 30-04-2005 | Match details |
| 3 |  David Humphreys | Ulster | Ospreys | 30-04-2005 | Match details |
| 2 |  Ceirion Thomas | Scarlets | Ospreys | 07-05-2005 | Match details |
| 1 | Barry Davies | Scarlets | Ospreys | 07-05-2005 | Match details |
