| Penalties | Players | VS Club | Date | |
|---|---|---|---|---|
| 5 | Ceri Sweeney | Scarlets | 17-09-2004 | Match details |
| 4 | Ceri Sweeney | Scarlets | 01-01-2005 | Match details |
| 3 | Craig Warlow | Edinburgh Rugby | 19-11-2004 | Match details |
| 3 | Craig Warlow | Connacht | 28-11-2004 | Match details |
| 3 | Percy Montgomery | Scottish Borders | 04-03-2005 | Match details |
| 2 | Craig Warlow | Munster | 13-11-2004 | Match details |
| 2 | Ceri Sweeney | Cardiff Blues | 27-12-2004 | Match details |
| 2 | Percy Montgomery | Ulster | 18-02-2005 | Match details |
