Agatharchus or Agatharch was a self-taught painter from Samos, who lived in the 5th century BC. His father was named Eudemos (Εὔδημος). He is said by Vitruvius to have invented scenic painting, and to have painted a scene for a tragedy which Aeschylus exhibited. Hence some writers, such as Karl Woermann, have supposed that he introduced perspective and illusionism into painting.