Iphigenia is a 1977 Greek Epic drama directed by Michael Cacoyannis, based on the Greek myth of Iphigenia, the daughter of Agamemnon and Clytemnestra, who was ordered by the goddess Artemis to be sacrificed. Cacoyannis adapted the film, the third in his "Greek Tragedy" trilogy, from his stage production of Euripides' play Iphigenia at Aulis. The film stars Tatiana Papamoschou as Iphigenia, Kostas Kazakos as Agamemnon and Irene Papas as Clytemnestra. The score was composed by Mikis Theodorakis.