This article is about the Mythical British king Heli. For Heli in the Bible, see Heli (Bible).

Heli was a legendary king of the Britons as accounted by Geoffrey of Monmouth. He was the son of King Digueillus and succeeded by his son Lud. He ruled for forty years and produced three sons, Lud, Cassivelaunus, and Nennius. The elder two both ruled Britain.

His reign can be estimated from 113 BC to 73 BC when based on the accounts of Geoffrey of Monmouth.