In Greek mythology, Arethusa (/ˌærɪˈθjuːzə/; Ancient Greek: Ἀρέθουσα, romanized: Aréthousa) is a minor figure from Ithaca who is transformed into a fountain bearing her name. Her story survives in scholia on Homer's epic poem the Odyssey.

Arethusa was a woman from the island of Ithaca; other than a son, no other family or lineage of hers is preserved. According to an anonymous scholiast on Homer, Arethusa had a son named Corax (meaning "raven") who was a hunter.^[1] One day while hunting a hare, Corax accidentally fell off a cliff and died. Out of grief for losing her son, the inconsolable Arethusa was transformed into a fountain bearing her name on the spot Corax died, while the rock there took the name of the dead son thereafter.^[2][3]

In the Odyssey, after returning home following a long ten-year long journey, the disguised king Odysseus finds his slave Eumaeus tending the swine which graze next to the rock of Corax and the fountain of Arethusa.^[4][5]

Arethusa was a common name for springs in antiquity; today a spring with the same name in Pera Pigadi on Ithaca can be potentially identified with the mythological one, but much of this is speculative.^[6]

• Hyria
• Pirene

• Dindorf, Wilhelm, ed. (1855). Scholia Graeca in Homeri Odysseam Ex Codicibus Aucta Et Emendata. Vol. II. Typographeo Academico. ISBN 978-5-87561-491-0.
• Greatheed, Samuel; Parken, Daniel; Williams, Theophilus; Conder, Josiah; Price, Thomas; Ryland, Jonathan Edwards; Paxton Hood, Edwin (1809). "Gell's Antiquities of Ithaca". The Eclectic Review. Vol. V.
• Homer (2015). The Odyssey. Translated by Barry P. Powell. Oxford University Press. ISBN 978-0-19-992588-9.
• Stephanus of Byzantium, Ethnica, edited by August Meineike (1790–1870), published 1849.

v t e Metamorphoses in Greek mythology
Animals	Avian Abas Acanthis Acanthus Acmon Aëdon Aegolius Aegypius Aëtos Aesacus Agrius and Oreius Agron Alcander Alcyone Alcyone and Ceyx Alcyonides Alectryon Anthus Antigone Argus Arne Sithonis Artemiche Ascalaphus Asteria Autonous Botres Bulis Byssa Caeneus Celeus Cerberus Chelidon Cinyras Clinis Combe Corone Ctesylla Cycnus of Aetolia Cycnus of Ares Cycnus of Colonae Cycnus of Liguria Daedalion Erinoma Erodius Eumelus Gerana Harmothoë Harpalyce Harpasus Harpe Hierax Hippodamia Hyperippe Hyria Ictinus Idas Ino Itys Iynx Laius Lelante Lycius Lycus Megaletor Meleagrids Memnonides Meropis Merops Minyades Munichus Neophron Nisus Nyctaea Nyctimene Oenoe Oenotropae Ortygius Pandareus Pelia Perdix Periphas Peristera Picus Pierides Phene Philaeus Philomela Pleiades Polyphonte Polytechnus Procne Rhexenor Schoeneus Scylla Tereus Timandra Non-avian Abas Actaeon Arachne Arcas Arge Aristaeus Ascalabus Atalanta Cadmus Calchus Callisto Cephissus Cerambus Cercopes Chelone Circe Curetes Cynosura Galanthis Gale Harmonia Hecuba Helice Hippomenes Io Lycaon Lycian peasants Lyncus Melanippe Melian nymphs Melissa Minyades Myia Myrmex Naïs Nerites Ocyrhoe Odysseus Pentheus Phalanx Phineus Phoenice Pompilus Taygete Theophane Tiresias Titanis Tithonus Tyrrhenian pirates Aethalides Alcimedon Dictys Epopeus Melas Medon Opheltes
Base appearance	Achilles Antigone Charybdis Lamia Medusa Midas Mulberry fruit Phaon Scylla Sirens White raven
Humanoids	Arne Calliste Cymodoce Cephalus' wife Galatea Leleges Myrmidons Nephele Spartoi Weasel
Inanimate objects	Aconteus Aglaurus Alcmene Anaxarete Ariadne Arsinoë Aspalis Battus Britomartis Calydon Cercopes Cragaleus Daphnis Iodame Laelaps Lethaea Lyco and Orphe Olenus Pallas Pandareus Phineus Polydectes Proetus Propoetides Pyrrhus Teumessian fox Wolf
Landforms	Achelous Acheron Acis Aea Alope Alpheus Arethusa (Boeotia) Arethusa (Elis) Arethusa (Ithaca) Asteria Atlas Aura Byblis Calliste Castalia Chione Cleite Comaetho Cyane Dirce Haemus Lichas Lilaeus Manto Marsyas Menippe and Metioche Niobe Perimele Pirene Pyramus and Thisbe Rhodope Rhodopis Sangas Selemnus Sybaris
Opposite sex	Caeneus Hermaphroditus Iphis Leucippus Salmacis Siproites Sithon Tiresias
Plants	Adonis Agdistis Ajax Amaracus Ambrosia Ampelus Anethus Attis Baucis and Philemon Calamus Carpus Carya Cissus Clytie Crocus Cyparissus Daphne Diopatra Dryope Elaea Elate Eteocleides Heliades Aegle Dioxippe Lampetia Merope Phaethusa Phoebe Hesperides Aegle Erytheia Hyacinthus Leuce Leucothoe Libanus Lotis Lycurgus Mecon Melus Messapians Milk Minthe Myrice Myrina Myrsine Narcissus Oechalides Philyra Phyllis Picolous Pitys Platanus Psalacantha Saliva Side Smilax Smyrna Spear Syceus Syrinx
Voluntary	Greek gods Kobalos Mestra Periclymenus
Other	Cumaean Sibyl Echo Hyades Hylas Milk of Hera Pleiades
False myths	Acantha Amethyste Orchis Rhodanthe
Metamorphoses