| Country: | England |
| Official Name: | Northington Down |
| Coordinates: | 51.1333°N -1.2098°W |
| Shire District: | Winchester |
| Shire County: | Hampshire |
| Region: | South East England |
| Constituency Westminster: | Winchester |
| Post Town: | ALRESFORD |
| Postcode District: | SO24 |
| Postcode Area: | SO |
| Os Grid Reference: | SU5538837410 |
Northington Down is a hamlet in the civil parish of Northington in the City of Winchester district of Hampshire, England. Its nearest town is New Alresford, which lies approximately south-east from the hamlet.