Cocidius is a Celtic god worshipped in Britain, both by native Britons and by the Roman soldiers stationed in his region. His altars tended to be simple ones, indicating that he was a god more honored by the average person (and soldier) than by the aristocracy. He may have been a god of battle.

Cocidius was identified by the Romans most often with their god of war, Mars, and once with their wilderness god, Silvanus, in both cases by way of the interpretatio romana.


Cocidius received votive and dedicatory offerings from his worshippers; otherwise little is known of the specifics of his cult.

The source of Cocidius’ name is unclear, and may not even be Celtic in origin. It has, however, been compared to the modern Welsh coch or “red.”

Cocidius was honored in Britain, with a strong center of worship in northern England.

Literary evidence

Archaeological evidence
Bankshead, England; Bewcastle, England; Birdoswald, England; Castlesteads, England; Chesterholm, England; Ebchester, England; Hardriding, England; Housesteads, England; Howgill, England; Lancaster, England; Netherby, Old Carlisle, England; Risingham, England