Tiasa

 ( Naiads ) 

In Greek mythology, Tiasa (Ancient Greek: Τίασα) was a Naiad nymph of a riverCf. also Hesychius of Alexandria s. v. Τίασσα: "Tiassa: a spring in Lacedaemon; according to some a river". A "fountain of Tiassus" is also mentioned in Athenaeus, Deipnosophistae 4.139B near Amyclae, Sparta. She was a Laconian princess as the daughter of King Eurotas and Cleta, and thus sister of Sparta.

By the river Tiasa was situated a temple of Cleta and Phaenna, the two Charites recognized in Sparta, which was purported to have been founded by Lacedaemon.Pausanias, 3.18.6

• Athenaeus, The Deipnosophists or Banquet of the Learned. London. Henry G. Bohn, York Street, Covent Garden. 1854. Online version at the Perseus Digital Library.
• Athenaeus of Naucratis, Deipnosophistae. Kaibel. In Aedibus B.G. Teubneri. Lipsiae. 1887. Greek text available at the Perseus Digital Library.
• Pausanias, Description of Greece with an English Translation by W.H.S. Jones, Litt.D., and H.A. Ormerod, M.A., in 4 Volumes. Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1918. . Online version at the Perseus Digital Library