On Justice (Greek, Ancient (to 1453);: Περὶ Δικαίου; Latin: De Justo[1]) is a Socratic dialogue that was once thought to be the work of Plato.[2] In the short dialogue, Socrates discusses with a friend questions about what is just and unjust.[3]
This work is not to be confused with Plato's Republic, whose alternate title in ancient times was also On Justice.