In Greek mythology, Carnus (also spelled Carneus and Carneius) was a seer from Acarnania. According to the poet Praxilla, he was a son of Zeus and Europe. He was reared by Leto and Apollo, and is also known to have been a lover of Apollo.
Carnus accompanied the Heracleidae, and was killed by Hippotes with a spear for giving obscure prophecies. Apollo then struck the Dorians with plague; having consulted an oracle, they banished Hippotes from their camp and established a cult of Apollo Carneius to propitiate the god.