In Greek mythology, Ephyra (Ancient Greek: Ἐφύρα, romanized: Ephýra) or Ephyre may refer to two different deities:

• Ephyra, one of the 3,000 Oceanids, water-nymph daughters of the Titans Oceanus^[1] and his sister-wife Tethys.^[2] Otherwise, she was called the daughter^[3] or wife^[4][5] of the Titan Epimetheus. Ephyra was the first to dwell in the land of Ephyrae, which was later called Corinth.^[6] In some accounts, her father was called Myrmex.^{[citation needed]} Ephyra was sometimes attributed to be the mother of Aeetes by Helios.^[7]
• Ephyre, one of the 50 Nereids, sea-nymph daughters of the "Old Man of the Sea" Nereus and the Oceanid Doris.^[8][9] She was in the train of Cyrene along with her sister Opis, Deiopea and Arethusa.^[10] This Ephyra may be the same to the above Oceanid.^[11]