Arethusa

Arethusa may refer to:

Mythology

Arethusa (mythology), a nereid nymph who became a fountain
- Arethusa (Greek myth) several other figures also called Arethusa
Arethusa, one of the Hesperides nymphs

Arethusa (Mygdonia), an ancient city in Mygdonia of ancient Macedonia
Arethusa, ancient name of Al-Rastan, Syria
Arethusa (see), a titular see of Syria near Apamea
Arethousa, a municipal unit in the Thessaloniki regional unit, Greece
Arethousa, Ikaria, a village on the Greek island Ikaria
Arethusa Falls, one of the highest waterfalls in New Hampshire, USA
Antipatris, refounded in 64–63 BC by Pompey as Arethusa
Fountain of Arethusa, a fountain in Ortygia, Sicily, named from the above-mentioned nereid

Arethusa-class cruiser (disambiguation), two classes of Royal Navy cruiser
- Arethusa-class cruiser (1913), eight light cruisers built in 1912–1914 that served in World War I
- Arethusa-class cruiser (1934), four light cruisers built in 1934–1936 that served in World War II
Aréthuse-class submarine, a class of French submarine, in service 1958-1981
HMS Arethusa, nine ships of the Royal Navy, 1759 to 1991
- The Saucy Arethusa, a ballad about the action of 17 June 1778
Three training ships operated by the Shaftesbury Homes and Arethusa charity
- Arethusa, formerly HMS Arethusa (1849)
- Arethusa II (1932–1975), formerly Peking (ship)
- Arethusa III, a much smaller ketch used as a training ship
French ship Aréthuse, various ships of the French Navy
USS Arethusa, three ships of the United States Navy 1864 to 1946

Arethusa (plant), a monospecific genus of orchids (Dragon's mouth, Arethusa bulbosa)
Arethusa De Montfort, 1808, a foram
Arethusa Barrande, 1846, the occupied name for a trilobite, now renamed to Aulacopleura
Arethusa Oken, 1815, a synonym for the Portuguese man o' war
- Arethusa caravell Oken, 1815, a synonym for the Portuguese man o' war
95 Arethusa, an asteroid

Arethusa (journal), an academic journal
Arethusa, a poem by Percy Bysshe Shelley
Aretousa, a main character in the early 17th century romance Erotokritos
Arethusa, the writer of a letter in Propertius, 4.3 ('Arethusa sends these instructions to her lycotas,')
Shaftesbury Homes and Arethusa, one of the oldest charities dealing with children in the United Kingdom
- Arethusa, a residential activities centre in Upnor, Kent, run by Shaftesbury Homes and Arethusa