| Country: | England |
| Official Name: | Ecchinswell, Sydmonton and Bishops Green |
| Coordinates: | 51.3462°N -1.274°W |
| Map Type: | Hampshire |
| Population: | 1182 |
| Population Ref: | (2001 census) 1,048 (2011 Census including Hare Warren and North Sydmonton)[1] |
| Shire District: | Basingstoke and Deane |
| Shire County: | Hampshire |
| Region: | South East England |
| Constituency Westminster: | Newbury |
| Post Town: | NEWBURY |
| Postcode District: | RG20 |
| Postcode Area: | RG |
| Dial Code: | 01635 |
| Os Grid Reference: | SU505614 |
| Website: | http://www.ecchinswell-pc.gov.uk/ |
| Hide Services: | Yes |
Ecchinswell, Sydmonton and Bishops Green (occasionally referred to as just Ecchinswell and Sydmonton) is a civil parish within the district of Basingstoke and Deane in Hampshire, United Kingdom.
Sydmonton is the home of Sydmonton Court, estate of the Kingsmill Family, including Admiral Sir Robert Kingsmill. The estate is currently owned by Andrew Lloyd Webber and is home to the annual Sydmonton Festival.
Watership Down, location of the famous Richard Adams novel of the same name, is just South of Ecchinswell. Ladle Hill on Great Litchfield Down, also lies to the south. Part of the hill is a 10.37ha biological SSSI, first notified in 1978. The hill has a partially completed Iron Age hill fort on its summit, and the surrounding area is rich in Iron Age tumuli, enclosures, lynchets and field systems. Ladle Hill and Watership Down are easily accessed from the Wayfarer's Walk cross-county footpath that passes through the parish.