Constantine II (Konstantínos II, ˌkonstaˈdinos ðefˈteros; 2 June 1940 – 10 January 2023) was the last king of Greece, reigning from 6 March 1964 until the abolition of the Greek monarchy on 1 June 1973.
Constantine was born in Athens as the only son of Crown Prince Paul and Crown Princess Frederica of Greece. Being of Danish descent, he was also born as a prince of Denmark. As his family was forced into exile during the Second World War, he spent the first years of his childhood in Egypt and South Africa. He returned to Greece with his family in 1946 during the Greek Civil War. After Constantine's uncle George II died in 1947, Paul became the new king and Constantine the crown prince. As a young man, Constantine was a competitive sailor and Olympian, winning a gold medal in the 1960 Rome Olympics in the Dragon class along with Odysseus Eskitzoglou and George Zaimis in the yacht Nireus. From 1964, he served on the International Olympic Committee.
Constantine acceded as king following