775
| Years: 771 772 773 774 - 775 - 776 777 778 779 | |
| Decades: 740s 750s 760s - 770s - 780s 790s 800s | |
| Centuries: 7th century - 8th century - 9th century | |
Events
- Leo IV succeeds Constantine V as Byzantine Emperor.
- Battle of Otford between Mercia and Kent.
- Alpin II succeeds Ciniod as king of the Picts.
Deaths
- Al-Mansur, second Abbasid caliph
- September 14 - Constantine V, Byzantine Emperor