|Ab urbe condita||1648|
|Balinese saka calendar||816–817|
|Chinese calendar||甲寅年 (Wood Tiger)|
3591 or 3531
— to —
乙卯年 (Wood Rabbit)
3592 or 3532
|- Vikram Samvat||951–952|
|- Shaka Samvat||816–817|
|- Kali Yuga||3995–3996|
|Japanese calendar||Kanpyō 7|
|Minguo calendar||1017 before ROC|
|Seleucid era||1206/1207 AG|
|Thai solar calendar||1437–1438|
1021 or 640 or −132
— to —
1022 or 641 or −131
- The Magyars are expelled from southern Russia, and settle in the Carpathian Basin, under the leadership of Árpád (The traditional date of 896 held during the 20th century has proved to be erroneous). Emperor Leo VI (the Wise) seeks aid from the Magyars, and after crossing the Danube on Byzantine ships, they ravage Bulgarian territory.
- Simeon I (the Great), ruler (khan) of the Bulgarian Empire, seeks refuge in the fortress of Drastar, while the Magyars reach the outskirts of the capital Preslav. Facing a difficult situation with war on two fronts, Simeon calls for a truce. Leo VI sends the diplomat Leo Choirosphaktes to Bulgaria, to negotiate the terms.
- King Odo (or Eudes) takes a large army against Rheims, and forces anti-king Charles the Simple to flee to Germany. King Arnulf of Carinthia, throwing off his agreements with Odo, charges his son Zwentibold to invade the West Frankish Kingdom, and re-install Charles on the throne.
- May – Arnulf of Carinthia summons the Imperial Diet in his residence at Worms. Angered by the non-appearance of Charles the Simple, he again supports Odo's claim to the throne of the West Frankish Kingdom. In the same assembly, he crowns Zwentibold as king of Lotharingia.
- Guy IV, duke of Spoleto, conquers Benevento (after the Byzantines have moved the capital of Byzantine Italy from Benevento to Bari). Guy makes himself prince, thereby uniting the two Italian states. The Byzantines attempt to retake Benevento, but are defeated by Lombard troops.
- December – Arnulf of Carinthia invades Italy, at the head of an East Frankish expeditionary army. He arrives in Pavia and reorganizes the Lombard state. Arnulf partitions the northern part of the kingdom: the western half (March of Lombardy) and the eastern half (March of Verona).
- Arnulf of Carinthia crosses the Po River and divides his army in two: one corps (Swabian) proceeds to Florence (via Bologna), while the other corps (Franks) moves through the Lunigiana to the precincts of Rome.
- Spytihněv I, duke of Bohemia, together with the Slavník prince Witizla, breaks away from Great Moravia, and swears allegiance to Arnulf of Carinthia in Regensburg.
- King Anarawd of Gwynedd is supplied with English troops, to assist in his reconquest of Seisyllwg (Wales). He is successful, and his brother Cadell is finally able to take his rightful place on the Seisyllwg throne.
- Autumn – King Alfred the Great blockades the Lea River and builds fortifications, trapping the Danes Vikings at Hertford. They abandon their longships and escape to Bridgnorth, located in the Severn Valley.
- Hamdan ibn Hamdun, a Taghlibi Arab chieftain, is defeated and captured by Caliph Al-Mu'tadid at the fortress of Mardin (near modern Cizre). Hamdan's son Husayn enters Abbasid service, beginning the rise of the Hamdanid Dynasty.
- Birth of Topiltzin, future emperor of the Toltec Empire, in Michatlauhco, modern-day Morelos (approximate date).
- March 4 – Liu Zhiyuan, founder of the Later Han (d. 948)
- Al-Muqtadir, caliph of the Abbasid Caliphate (d. 932)
- Gérard of Brogne, Frankish abbot (approximate date)
- Liu Chong, founder of the Northern Han (approximate date)
- Odo of Wetterau, German nobleman (approximate date)
- Sancho Ordóñez, king of Galicia (approximate date)
- Su Yugui, Chinese official and chancellor (d. 956)
- May 16 – Qian Kuan, Chinese nobleman
- June 4 – Li Xi, chancellor of the Tang Dynasty
- August 24 – Guthred, king of Northumbria
- October 1 – Kong Wei, chancellor of the Tang Dynasty
- Fujiwara no Yasunori, Japanese nobleman (b. 825)
- Gerolf of Holland, count of Friesland (or 896)
- Hugh, Frankish duke and illegitimate son of Lothair II
- Li Kuangchou, Chinese warlord (approximate date)
- Lu Xisheng, chancellor of the Tang Dynasty
- Minamoto no Tōru, Japanese poet (b. 822)
- Muiredach mac Eochocáin, king of Ulaid (Ireland)
- Wang Chongying, Chinese warlord and governor
- Wang Chucun, general of the Tang Dynasty (b. 831)
- Wang Xingyu, Chinese warlord (approximate date)
- Wei Zhaodu, chancellor of the Tang Dynasty
- Wulfred, bishop of Lichfield (approximate date)
- John V.A. Fine, Jr. (1991). The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century, p. 138. ISBN 978-0-472-08149-3.
- John V.A. Fine, Jr. (1991). The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century, pp. 138–139. ISBN 978-0-472-08149-3.
- Paul Hill (2009). The Viking Wars of Alfred the Great, pp. 134–135. ISBN 978-1-59416-087-5.