Coln St. Dennis is a village and civil parish on the River Coln in Gloucestershire about 3 miles (4.8 km) southwest of Northleach and about 7 miles (11 km) northeast of Cirencester. The parish includes the village of Coln Rogers and the hamlets of Calcot, Fossebridge and Winson. The Fosse Way Roman road, which is now the A429 trunk road, forms the western boundary of the parish.