| 2018 Under-20 Provincial Championship | |
|---|---|
| Countries | South Africa |
| Date | 11 August – 19 October 2018 |
| Champions | Griffons U20 |
| Runners-up | Pumas U20 |
| Matches played | 20 |
| Tries scored | 204 (average 10.2 per match) |
| Top point scorer | Ethan Williams (Griffons U20, 115) |
| Top try scorer | Allistair Mumba (Griffons U20, 17) |
The 2018 Under-20 Provincial Championship was the 2018 edition of the Under-20 Provincial Championship, an annual national Under-20 rugby union competition held in South Africa, and was contested from 11 August to 19 October 2018.
The competition was won by Griffons U20, who beat Pumas U20 53–6 in the final played on 19 October 2018.