This paper challenges the accepted interpretation of Oedipus Rex, which takes Oedipus’ ignorance of the relevant facts to be an established matter. I argue that Oedipus’ epistemic state is ambiguous, and that this in turn generates a moral ambiguity with respect to his actions. Because ignorance serves as a moral excuse, my demonstration that Oedipus was not ignorant bears significantly on the moral meaning of the play. I next propose to anchor this ambiguity in the Freudian notion of the unconscious, (...) by presenting an interpretation that treats Oedipus’ knowledge as unconscious. I discuss the moral status of an agent acting from unconscious knowledge and find it to be genuinely indeterminate, thus supporting my claim that the play is epistemically and morally ambiguous. (shrink)