In Greek mythology, Lysithea is known as the daughter of Oceanus and one of Zeus's lovers.
Alternatively, Lysithea is also one of Jupiter's irregular moons. Discovered in 1938 by Seth Barnes Nicholson, it was originally known as Jupiter X, though it was also referred to as Demeter from 1955 to 1975.
The name Lysithea has appeared in various places. In the novel Voices of a Distant star a battleship is named after it, wherein another one of Jupiter's moons, Europa, is a United Nations naval base. In Halo, Lysithea is an artificial intelligence construct of the Office of Naval Intelligence.
Lysithea is also the name of a song by Access to Arasaka from the album Geosynchron.
There also exists a Lysithea Beach Hotel located in Larnaca, Cyprus.