In Greek mythology, Perse (Greek: Πέρση; also spelled Persa or Perseis) is an Oceanid nymph, one of the three thousand daughters of the Titans Oceanus and Tethys, and the wife of the sun god, Helios. Their children are Aeetes, Perses, Pasiphae, and Circe. One of her many Oceanid sisters is Amphitrite (the wife of Poseidon). Perse is also closely identified with Hecate.