Iphigenia, in Greek mythology, daughter of Clytemnestra and Agamemnon and sister of Orestes. Iphigenia comes to a different fate in each of two versions of her role during the Trojan War. In one, she dies when her father Agamemnon sacrifices her to the goddess Artemis in exchange for Artemis favoring his fleet on its journey to Troy. In another version of the myth, Iphigenia does not die during the sacrifice, but is spared by Artemis and later becomes a priestess at Taurus. As this version goes, Iphigenia saves her brother, and the two flee to Greece.