Pythagoras Papastamatiou (Greek: Πυθαγόρας Παπασταματίου; 12 April 1930 – 12 November 1979), mainly known by the mononym Pythagoras, was a Greek lyricist and playwright.
His parents met each other in Smyrna (now İzmir, Turkey), shortly before the Asia Minor Catastrophe.
In 1940 (during the outbreak of World War II), Pythagoras started attending high school at Agrinio All-male High school.
During the German occupation of Greece, he was hiding in Valtos.
He attended the Drama School of the Athens Conservatory, where he was a student of Dimitris Rontiris.