| Country: | England |
| Region: | South West England |
| Map Type: | Cornwall |
| Official Name: | Lower Brynn |
| Civil Parish: | Withiel |
| Unitary England: | Cornwall |
| Lieutenancy England: | Cornwall |
| Os Grid Reference: | SW990629 |
| Coordinates: | 50.431°N -4.832°W |
| Hide Services: | yes |
Lower Brynn is a hamlet in the parish of Withiel, Cornwall, England, UK.[1] Lower Brynn is approximately 5miles south-west of Bodmin.[2]