Cythera may refer to:
Places Cythera (island), an island of Greece, also written Kythira, Kythera, Kithira Cytherean: pertaining to the island Cythera Cythera (ancient town), an ancient town on the island of Cythera
Ships USS Cythera, the name of two United States Navy ships Cythera (yacht), a steel ketch, designed and built by Peter A. Fenton, launched in 1962 Cythera, a yacht lost with all aboard during the Great Blizzard of 1888
Other Cythera (video game) a computer game by Ambrosia Software Cythera (novel), a 1998 novel by Richard Calder In Cythera, a 2012 song by Killing Joke
See also Cytherea (disambiguation) The Embarkation for Cythera, a painting by French painter Jean-Antoine Watteau