In Greek mythology, Antigone is a Theban princess, and a character in several ancient Greek tragedies. She is the daughter of Oedipus, king of Thebes. Her mother is Jocasta. In another variation of the myth, her mother is Euryganeia. She is a sister of Polynices, Eteocles, and Ismene. The meaning of the name is, as in the case of the masculine equivalent Antigonus, "in place of one's parents" or "worthy of one's parents". Antigone appears in the three 5th century BC tragic plays written by Sophocles, known collectively as the three Theban plays. She is the protagonist of the tragedy Antigone. She makes a brief appearance at the end of Aeschylus' Seven against Thebes, while her story was also the subject of Euripides' now lost play with the same name.

In Greek mythology, Ismene is a Theban princess. She is the daughter and half-sister of Oedipus, king of Thebes, daughter and granddaughter of Jocasta, and sister of Antigone, Eteocles, and Polynices. She appears in several tragic plays of Sophocles: at the end of Oedipus Rex, in Oedipus at Colonus and in Antigone. She also appears at the end of Aeschylus' Seven Against Thebes.