| Conflict: | Battle of Cirencester |
| Date: | 628 |
| Place: | Cirencester, Hwicce (in modern-day England) |
| Result: | Mercian victory; Mercia takes control of the Severn Valley and the territory of the Hwicce |
| Combatant1: | Mercia |
| Combatant2: | Gewisse |
| Commander1: | Penda |
| Commander2: | Cynegils and Cwichelm |
The Battle of Cirencester was fought in 628 at Cirencester in modern-day England. The conflict involved the armies of Mercia, under King Penda, and the Gewisse (predecessors of the West Saxons), under Kings Cynegils and Cwichelm.
The Anglo-Saxon Chronicle (A) states:
628. Here Cynegils and Cwichelm fought against Penda at Cirencester, and then came to an agreement.[1]
This suggests that the Gewisse were defeated.
Cirencester had nominally been under the influence of the Gewisse since Battle of Dyrham in 577, although archaeological evidence suggests Anglo-Saxon settlement near the Roman town from the mid sixth century.[2] Henceforward the region would be controlled by the minor kingdom of the Hwicce.[3]