The Battle of Hehil is a battle won by a British force, probably against the Anglo-Saxons of Wessex in the year 721 or 722.

The location is unknown, except that it was apud Cornuenses (among the Cornish).The battle is considered a notable victory for the Britons and is seen as having secured the independence of Dumnonia, the Celtic kingdom in southwest Britain which became the Kingdom of Cornwall.