| Country: | England |
| Official Name: | Carnsmerry |
| Region: | South West England |
| Os Grid Reference: | SX013585 |
| Coordinates: | 50.392°N -4.796°W |
| Civil Parish: | Treverbyn |
| Unitary England: | Cornwall |
| Lieutenancy England: | Cornwall |
| Constituency Westminster: | St Austell and Newquay |
| Post Town: | ST. AUSTELL |
| Postcode Area: | PL |
| Postcode District: | PL26 |
| Dial Code: | 01726 |
Carnsmerry is a hamlet in Cornwall, England.[1] It is half a mile south-west of Bugle[2] and lies at around 520feet above sea level.[1] Carnsmerry is in the civil parish of Treverbyn.