- 323 BC 13 Jun Alexander the Great dies of a mysterious illness in Babylon, sparking 42 years of war for his succession.
- 313 13 Jun The 'Edict of Milan' is proclaimed, ending the persecution of Christians across the Roman empire.
- 1944 13 Jun German V1 'flying bombs' are used against Britain for the first time - six die in Bethnal Green, London.

