Melksham is a town and civil parish located in Wiltshire, England. It is situated on the River Avon, positioned approximately 4.5 miles (7 km) northeast of Trowbridge and 6 miles (10 km) south of Chippenham.
According to the 2021 census, the population of the parish was 18,113. The town serves as a local community within the county of Wiltshire.