The Battle of Roundway Down was fought on 13 July 1643 at Roundway Down near Devizes, in Wiltshire during the First English Civil War. Despite being outnumbered and exhausted after riding overnight from Oxford, a Royalist cavalry force under Lord Wilmot won a crushing victory over the Parliamentarian Army of the West under Sir William Waller.

Roundway Down and Covert is an area of sloping chalk grassland close to the hamlet of Roundway, near Devizes in Wiltshire, England. It is part of the North Wessex Downs Area of Outstanding Natural Beauty. At the summit of the slope are ancient earthworks, evidence of a Bronze Age human settlement and Iron Age hillfort.