The Oresteia is a trilogy of Greek tragedies written by Aeschylus in the 5th century BCE, concerning the murder of Agamemnon by Clytemnestra, the murder of Clytemnestra by Orestes, the trial of Orestes, the end of the curse on the House of Atreus and the pacification of the Furies.

Greek tragedy is one of the three principal theatrical genres from Ancient Greece and Greek inhabited Anatolia, along with comedy and the satyr play. It reached its most significant form in Athens in the 5th century BC, the works of which are sometimes called Attic tragedy.