undine, in folklore, female water sprite who could acquire a soul by marrying a human being. If, however, her lover proved unfaithful, she had to return to the sea. The legend is the subject of Baron de La Motte-Fouqué's Undine and Jean Giraudoux's Ondine.

Undine, Undines, Undina, or Ondine are sometimes interchangeable and may refer to:

• Ondine (mythology), a water nymph from German mythology

In literature and painting:

• Undine (novella) (1811), a novella by Friedrich de la Motte Fouqué
• Ondine, a play by Jean Giraudoux (1939)
• Undine (Schreiner), an autobiographical book by Olive Schreiner (1928)
• Undine (Waterhouse painting), by John William Waterhouse (1872)
• Ondine, a poem by Aloysius Bertrand (1842)
• Undine, a book written by Penni Russon. It is a trilogy with the following books being Breathe, and Drift.

In music:

• Sonata Undine, a Romantic sonata for flute and piano (in E-minor) by Carl Reinecke
• Ondine, a movement of the piano piece Gaspard de la nuit by Maurice Ravel (1906)
• Undine, a prelude for piano by Claude Debussy (1911–13)

In opera:

• Undina (Lvov), an opera by Alexei Lvov (1846)
• Undina (Tchaikovsky), an opera (1869) by Pyotr Tchaikovsky to the Russian libretto by Vladimir Sollogub
• Undine (Hoffmann), an opera by E.T.A. Hoffmann (1814)
• Undine (Lortzing), an opera by Albert Lortzing (1845)

In ballet:

• Ondine (Ashton) a ballet by Sir Frederick Ashton made on Dame Margot Fonteyn to Hans Werner Henze's music at the Royal Ballet (1958)
• Undine (ballet), music by Hans Werner Henze (1956–57), choreographed by Sir Frederick Ashton
• Ondine (Perrot), a ballet by Jules Perrot (1843) to Cesare Pugni's music and based on de la Motte Fouqué's novel
• Ondine (Pugni), music by Cesare Pugni (1843) for Jules Perrot's ballet

In film:

• The Loves of Ondine, a film by Andy Warhol.

In Science:

• Undina (fish), a prehistoric lobe-finned fish.

In ships:

• HMS Undine, eight ships in the Royal Navy
• USS Undine, two ships in the United States Navy
• MV Undine, a ro-ro ferry (11854t, 1991) owned by Cobefret Ferries of Belgium

In video games:

• Undine is one of the eight elemental spirits featured in the Mana series. Unsurprisingly, Undine represents the water element.
• Undine, one of the four races in Oblivion in Primal
• Ondine, the princess of the Clancers in Mischief Makers
• Undine, a water spirit in Namco's Tales role-playing game series
• Undine, one of the wing-spirits of Dizzy, a character in the Guilty Gear fighting game series
• Undine, one of the souls in Castlevania: Aria of Sorrow which allows you to walk on water.
• Undine, a water-dwelling race in Riviera: The Promised Land.

In popular culture:

• Undines, the name for female gondoliers in the manga ARIA
• Undine, a character from the Claymore anime & manga series.
• Ondine (actor) aka Robert Olivo (1937–1989), American actor
• 92 Undina, an asteroid
• Ondine (record label), a classical record label

See also

• Ondine's curse, a medical condition