|Ab urbe condita||1635|
|Balinese saka calendar||803–804|
|Chinese calendar||辛丑年 (Metal Ox)|
3578 or 3518
— to —
壬寅年 (Water Tiger)
3579 or 3519
|- Vikram Samvat||938–939|
|- Shaka Samvat||803–804|
|- Kali Yuga||3982–3983|
|Japanese calendar||Gangyō 6|
|Minguo calendar||1030 before ROC|
|Seleucid era||1193/1194 AG|
|Thai solar calendar||1424–1425|
1008 or 627 or −145
— to —
1009 or 628 or −144
- January 20 – King Louis the Younger dies in Frankfurt. He leaves his territory to his younger brother, Emperor Charles the Fat, who becomes sole ruler of the East Frankish Kingdom.
- April 11 – Battle of Remich: A Frankish army under Bishop Wala of Metz is defeated by Vikings, who are on a raid, near Remich (modern Luxembourg). During the fighting Wala is killed.
- Siege of Asselt: Charles the Fat besieges a Viking camp, who have plundered along the Meuse, the Rhine and the Moselle. He defeats their leader Godfrid, and grants him West Frisia.
- August 5 – King Carloman II becomes sole ruler of the West Frankish Kingdom, after the accidental death of his brother, Louis III. His power is limited by rebellious nobles in Burgundy.
- Oleg of Novgorod takes Kiev, and makes it his capital, starting in Ukraine and Eastern Europe, forming the Kievan Rus', replacing the 19-year-long Christianization of the Rus' Khaganate.
- King Alfred the Great increases the size of his new navy, and sails out to attack four Viking ships. Two of the ships are captured (before they surrender), and the other crews are killed.
- December – Ishaq ibn Kundaj, a Turkic military leader, arrests the Abbasid caliph Al-Mu'tamid, when the latter (and his followers) try to flee into Tulunid territory.
- February 8 – Muhammad ibn Tughj al-Ikhshid, founder of the Ikhshidid Dynasty (d. 946)
- Abu 'l-Asakir Jaysh ibn Khumarawayh, Muslim emir (approximate date)
- Cao Zhongda, official and chancellor of Wuyue (d. 943)
- Feng Dao, Chinese prince and chancellor (d. 954)
- Han Yanhui, Chinese Khitan chancellor (d. 959)
- Saadia Gaon, Jewish philosopher and exegete (or 892)
- Xia Luqi, general of the Later Tang Dynasty (d. 930)
- January 20 – Louis the Younger, king of the East Frankish Kingdom
- August 5 – Louis III, king of the West Frankish Kingdom
- December 16 – John VIII, pope of the Catholic Church
- December 21 – Hincmar, archbishop of Reims (b. 806)
- Ainbíth mac Áedo, Dál Fiatach king of Ulaid (Ireland)
- Al-Hasan ibn Makhlad al-Jarrah, Muslim vizier
- Ansgarde of Burgundy, Frankish queen (or 880)
- Chen Tao, Chinese poet (b. 824)
- Eric Anundsson, Swedish king (approximate date)
- Eudokia Ingerina, Byzantine empress (approximate date)
- Duan Yanmo, Chinese warlord (approximate date)
- García Íñiguez I, king of Pamplona (approximate date)
- Guaram Mampali, Georgian Bagratid prince
- Lambert III, Frankish nobleman (b. 830)