867
| Years: 863 864 865 866 - 867 - 868 869 870 871 | |
| Decades: 830s 840s 850s - 860s - 870s 880s 890s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- September: Basil I becomes sole ruler of the Byzantine Empire.
- September: Patriarch Photius I of Constantinople is removed from office and banished; Ignatius is patriarch of Constantinople once again.
- 14 December: Adrian II becomes pope.
Births
- Emperor Uda of Japan (d. 931)
- Gyeon Hwon, king of Hubaekje (d. 936)
Deaths
- September - Michael III, emperor of Byzantium (assassinated) (b. 839)
- November 13 - Pope Nicholas I
- King Galindo I Aznárez of Aragon
- Kassia, Byzantine poet and composer (b. 810)