In Greek mythology, Peneus (Πηνειός) was a river god, one of the three-thousand Oceanids, a child of Oceanus and Tethys.

The River God Peneus, Daphne who is in the process to be transformed into a laurel tree and Apollo. Mosaic from Paphos, Cyprus.

Eros, the Greek God of Love, shot Apollo, the Greek God of the sun, with one of his arrows, causing him to fall in love with the dryad Daphne, daughter of Ladon. It was Eros's plan that Daphne would scorn Apollo because Eros was angry that Apollo had made fun of his archery skills. Eros also claimed to be irritated by Apollo's singing. Daphne prayed to the river god Peneus to help her, and he changed her into a laurel tree, which later became sacred to Apollo.

Pineios River