Northleach is a market town and former civil parish, now in parish Northleach with Eastington, in the Cotswold district, in Gloucestershire, England. The town is in the valley of the River Leach in the Cotswolds, about 10 miles northeast of Cirencester and 11 miles east-southeast of Cheltenham. The 2011 Census recorded the parish's population as 1,854, the same as Northleach built-up-area.