Deirdre is the name of a tragic heroine in Irish mythology.
Deirdre may also refer to: Deirdre (given name), a list of people and fictional characters "Deirdre" (song), a song by the Beach Boys Deirdre (horse), a Thoroughbred racehorse Deirdre, a 1907 poem by W. B. Yeats LÉ Deirdre (P20), a ship in the Irish Naval Service Deirdre of the Sorrows, a 1909 play by J. M. Synge
See also Dierdre (artist), world fusion artist Dierdre Dubois, former frontwoman of Ekova Deidre