In Greek mythology, Celaeno referred to several different beings.
- One of the harpies, Celaeno ("the dark") was also known as Podarge ("fleet-foot"). The harpies were vicious winged monsters that terrorized Phineas among others. See Phineas for more details. Celaeno was also the mother of Xanthus and Balius, Achilles' supernatural horses by either Zephyrus or Zeus. Zephyrus was her constant lover.
- One of the Pleiades, Celaeno was Poseidon's lover and had one son, Lycus, with him. She may have also been the mother of Deucalion with Prometheus.