Callista, also can be spelt as Calista, Callistee, Kallista, Kalista or Kallistee comes from the Greek for "most beautiful (fem. )" (καλλίστη - kalliste). This name is a lesser known name for girls. As a name it is derived from the Greek name of a huntress in the myth of Callisto, who was loved by Zeus. The name Callisto was changed to the common Callista for use as a name because in English Callista is the feminine form. Callista may refer to:
Ascended Masters, in the Ascended Master Teachings is derived from the Theosophical concept of Masters of the Ancient Wisdom or "Mahatmas". They are believed to be spiritually enlightened beings who in past incarnations were ordinary humans, but who have undergone a process of spiritual transformation. The term "Ascended Master" was first introduced in 1934 with the publication of Unveiled Mysteries by Guy Ballard in The "I AM" Activity.