Phantis:Selected anniversaries/December 13
- 1943: The Holocaust of Kalavryta took place as German soldiers executed 1,101 villagers.
- 1959: Archbishop Makarios III was elected first President of the Republic of Cyprus, receiving 66.29% of the vote against 32.92% of Ioannis Clerides
- 1967: King Constantine II fled Greece as his attempted counter-coup against the Junta failed.
- Births: Panagiotis Kanellopoulos, politician, Prime Minister (1902)
- Deaths: Georgios Iakovidis, painter (1932); Mentis Bostantzoglou (known as Bost), cartoonist, satirist and playwright (1995)