Oedipus Rex, also known by its Greek title, Oedipus Tyrannus, or Oedipus the King, is an Athenian tragedy by Sophocles that was first performed around 429 BC. Originally, to the ancient Greeks, the title was simply Oedipus, as it is referred to by Aristotle in the Poetics.
Sophocles is one of three ancient Greek tragedians whose plays have survived. His first plays were written later than or contemporary with those of Aeschylus, and earlier than or contemporary with those of Euripides.