|Centuries:||7th century – 8th century – 9th century|
|Decades:||740s 750s 760s – 770s – 780s 790s 800s|
|Years:||776 777 778 – 779 – 780 781 782|
|779 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1532|
|Chinese calendar||戊午年 (Earth Horse)
3475 or 3415
— to —
己未年 (Earth Goat)
3476 or 3416
|- Vikram Samvat||835–836|
|- Shaka Samvat||701–702|
|- Kali Yuga||3880–3881|
|Japanese calendar||Hōki 10
|Minguo calendar||1133 before ROC
|Seleucid era||1090/1091 AG|
|Thai solar calendar||1321–1322|
Year 779 (DCCLXXIX) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 779 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- Saxon Wars: King Charlemagne assembles an Frankish army at Düren, crosses the Rhine at the modern town of Wesel and defeats the Saxons in battle near Bocholt (North Rhine-Westphalia). All the main Westphalian leaders are captured, except Widukind. Charlemagne crosses the Weser, Oker and Ohre rivers into Eastphalian territory where local leaders submit to Frankish rule and hand over hostages. Widukind remains in northern Saxony and relays upon guerrilla warfare.
- Battle of Bensington: King Offa of Mercia defeats his rival Cynewulf of Wessex at Bensington (modern-day Oxfordshire). He seizes control of Berkshire and probably London as well. According to sources of the Anglo-Saxon Chronicle Offa becomes "King of All England". Charlemagne writes a letter to him as "his dearest brother", but when Offa refuses to let one of Charlemagne's sons marry one of his daughters Charlemagne threatens to close the ports to English traders.
- King Aethelred I of Northumbria is deposed by prince Ælfwald, son of the late king Oswulf, who takes the throne as Ælfwald I.
- June 12 - In China, De Zong (personal name Li Kuo) succeeds his father Dai Zong as emperor of the Tang Dynasty.
- Æthelred I, king of East Anglia (approximate date)
- May 23 – Dai Zong, emperor of the Tang Dynasty (b. 727)
- Fujiwara no Momokawa, Japanese statesman (b. 732)
- Gerard I, Frankisch count
- December 17 – Sturm, abbot of Fulda
- Walpurga, Anglo-Saxon abbess (or 777)
- David Nicolle (2014). The Conquest of Saxony AD 782–785, p. 17. ISBN 978-1-78200-825-5