| Official Name: | Trewetha |
| Civil Parish: | St Endellion |
| Country: | England |
| Region: | South West England |
| Coordinates: | 50.5864°N -4.8199°W |
| Unitary England: | Cornwall |
| Lieutenancy England: | Cornwall |
| Hide Services: | Yes |
| Static Image: | The B3267 - geograph.org.uk - 4193019.jpg |
| Static Image Caption: | The B3267 |
Trewetha is a hamlet in the parish of St Endellion, Cornwall, England, United Kingdom.[1] There was a mine at Trewetha known as Wheal Boys.