| Country: | England |
| Map Type: | Cornwall |
| Region: | South West England |
| Official Name: | Coswinsawsin |
| Cornish Name: | Koswynnsowson |
| Civil Parish: | Gwinear-Gwithian |
| Unitary England: | Cornwall |
| Lieutenancy England: | Cornwall |
| Os Grid Reference: | SW625384 |
| Coordinates: | 50.1979°N -5.3292°W |
| Postcode Area: | TR |
| Postcode District: | TR14 0 |
Coswinsawsin (Cornish: Koswynnsowson)[1] is a hamlet in the parish of Gwinear-Gwithian (where the 2011 Census population was included), Cornwall, England.[2] [3]