Konstantinos G. Karamanlis, commonly anglicised to Constantine Karamanlis or just Caramanlis, was a four-time Prime Minister of Greece and two-term president of the Third Hellenic Republic. A towering figure of Greek politics, his political career spanned portions of seven decades, covering much of the latter half of the 20th century.

The president of Greece, officially the President of the Hellenic Republic, commonly referred to in Greek as the President of the Republic, is the head of state of Greece. The president is elected by the Hellenic Parliament; the role has been mainly ceremonial since the 1986 constitutional reform. The office was formally established by the Constitution of Greece in 1975, but has antecedents in the Second Hellenic Republic of 1924–1935 and the Greek junta in 1973–1974 which predated the transition to the current Third Hellenic Republic. The incumbent, since 13 March 2020, is Katerina Sakellaropoulou.