| Country: | England |
| Map Type: | Cornwall |
| Coordinates: | 50.692°N -4.53°W |
| Official Name: | Fonston |
| Civil Parish: | Warbstow |
| Unitary England: | Cornwall |
| Lieutenancy England: | Cornwall |
| Region: | South West England |
| Constituency Westminster: | North Cornwall |
| Post Town: | LAUNCESTON |
| Postcode District: | PL15 |
| Postcode Area: | PL |
| Dial Code: | 01566 |
| Os Grid Reference: | SX214912 |
Fonston is a hamlet 8miles north-west of Launceston in Cornwall, England.[1] Fonston lies at around 495m (1,624feet) above sea level on the road from Warbstow to Canworthy Water.