| Country: | England |
| Coordinates: | 51.1554°N -1.4594°W |
| Official Name: | Cottonworth |
| Shire District: | Test Valley |
| Shire County: | Hampshire |
| Region: | South East England |
| Constituency Westminster: | North West Hampshire |
| Post Town: | ANDOVER |
| Postcode District: | SP11 |
| Postcode Area: | SP |
| Dial Code: | 01264 |
| Os Grid Reference: | SU3790539712 |
Cottonworth is a small village in the Test Valley district of Hampshire, England. The village lies on the A3057 road between Andover and Romsey. According to the PostOffice the 2011 Census population was included in the civil parish of Wherwell. Its nearest town is Andover, which lies approximately 4 miles (6.5 km) north from the village.