| Penalties | Club | VS Club | Date | |
|---|---|---|---|---|
| 3 | Edinburgh Rugby | Munster | 05-05-2018 | Match details |
| 3 | Leinster | Scarlets | 26-05-2018 | Match details |
| 2 | Munster | Edinburgh Rugby | 05-05-2018 | Match details |
| 2 | Scarlets | Leinster | 26-05-2018 | Match details |
| 1 | Cheetahs | Scarlets | 05-05-2018 | Match details |
| 1 | Glasgow Warriors | Scarlets | 18-05-2018 | Match details |
