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. Perse was one of the wives of the sun god, Helios. Their children were Aeetes, Perses, Pasiphae, and Circe.
Perse is also closely identified with Hecate.
Perseis' name was derived from the Greek word persô meaning "to destroy," "to slay," or "to sack with fire."