Eurynome (/jʊˈrɪnəmiː/; Ancient Greek: Εὐρυνόμη) was a deity of ancient Greek religion worshipped at a sanctuary near the confluence of rivers called the Neda and the Lymax in classical Peloponnesus. She was represented by a statue of what we would call a mermaid. Tradition, as reported by the Greek traveller, Pausanias, identified her with the Oceanid, or "daughter of Ocean", of Greek poetry.

In the epic tradition, Eurynome was one of the elder Oceanides, that is, a daughter of Oceanus and Tethys. Eurynome was the third bride of Zeus and mother of the Charites, goddesses of grace and beauty.

When Hephaestus was cast from Olympus by the goddess Hera, who was disgusted at having borne a crippled child, he was caught by Eurynome and Thetis (possibly a doubling for Tethys, her mother). Eurynome and Thetis nursed the god Hephaestus on the banks of the earth-encircling river Oceanus, after his fall from heaven. Charis, Eurynome's daughter, later became Hephaestus' bride.

Eurynome is closely identified with another Eurynome, Queen of the Titans. This Eurynome was an early Titan queen who ruled Olympus beside her husband Ophion. The pair were wrestled for their thrones by Cronus and Rhea who cast them down into the earth-encircling river Oceanus.