| Penalties | Club | VS Club | Date | |
|---|---|---|---|---|
| 6 | Munster | Gwent Dragons | 13-11-2004 | Match details |
| 5 | Leinster | Scarlets | 14-11-2004 | Match details |
| 5 | Ospreys | Ulster | 21-01-2005 | Match details |
| 5 | Scottish Borders | Gwent Dragons | 04-03-2005 | Match details |
| 5 | Gwent Dragons | Scarlets | 17-09-2004 | Match details |
| 5 | Ulster | Cardiff Blues | 19-11-2004 | Match details |
| 4 | Glasgow Warriors | Munster | 20-02-2005 | Match details |
| 4 | Edinburgh Rugby | Scottish Borders | 20-03-2005 | Match details |
| 4 | Connacht | Edinburgh Rugby | 16-10-2004 | Match details |
| 4 | Scarlets | Ulster | 28-11-2004 | Match details |
| 4 | Cardiff Blues | Glasgow Warriors | 13-11-2004 | Match details |
