Konstantinos G. Karamanlis (8 March 1907 – 23 April 1998) was a Greek lawyer and a leading figure in Greek politics, who served four terms as Prime Minister of Greece (6 October 1955 – 5 March 1958, 17 May 1958 – 20 September 1961, 4 November 1961 – 17 June 1963, 24 July 1974 – 10 May 1980). He also served two terms as President of The Greek Republic (10 May 1980 – 10 March 1985, 5 May 1990 – 10 March 1995).