Tidworth is a garrison town and civil parish in south-east Wiltshire, England, on the eastern edge of Salisbury Plain. Lying on both sides of the A338 about
3+1⁄2 miles (5.6 km) north of the A303 primary route, the town is approximately 8 miles (13 km) west of Andover, 12 miles (19 km) south of Marlborough, and 13 miles (21 km) north by north-east of Salisbury. The population of the parish at the 2011 census was approximately 10,600.
Originally two villages – North Tidworth and South Tidworth – the modern town is dominated by Tidworth Camp, a large British Army site. Swinton Barracks, another Army site, is in the west of the parish.