Konstantinos Tsatsos, Greek scholar and politician, President of Greece (d. 1987)
Konstantinos D. Tsatsos (Greek: Κωνσταντίνος Τσάτσος; July 1, 1899, – October 8, 1987) was a Greek diplomat, professor of law, scholar and politician. He served as the second President of the Third Hellenic Republic from 1975 to 1980.