|Covid-19|Spring – Viking raiders ravage Flanders, and sack the abbey at Saint-Quentin. King Carloman II blocks their passage at Laviers, on the banks of the Somme. Meanwhile, Vikings enter the Rhine, but are turned back by Henry of Franconia (margrave of Saxony). They over-winter at Duisburg.
King Charles the Fat travels to Nonantola (Northern Italy), where he meets Pope Martinus II. He receives complaints of Guy II of Spoleto, official "protector" of Rome, who has invaded the Papal States. Charles orders Guy to appear before a tribunal.
Guy II of Spoleto begins a revolt, and assembles an army supported with Arab auxiliaries. Charles the Fat sends Berengar of Friuli with a expeditionary force, to deprive him of Spoleto. Berengar's army is hit by an epidemic, and forced to retire.
Svatopluk I, ruler (knyaz) of Great Moravia, conquers Lower Pannonia (modern Hungary), during the succession strife in the East Frankish Kingdom (approximate date).
The first historic document (written by Regino of Prüm) mentions Duisburg.
The Zanj Rebellion: Abbasid general Al-Muwaffaq brings in Egyptian forces, to help him in his 2-year siege of the Zanj capital Mukhtara. He captures the city, and crushes the revolt that has devastated Chaldea (modern Iraq) since 869.
September 11 – Yazaman al-Khadim, Abbasid governor of Tarsus, routs a Byzantine army under general Kesta Styppiotes, in a night attack. According to Arab chroniclers, 70,000 out of 100,000 Byzantine troops are killed.
Burchard II, duke of Swabia (or 884)
Hyogong, king of Silla (Korea) (d. 912)
Ibn Masarra, Muslim ascetic and scholar (d. 931)
Zhao Jiliang, chancellor of Later Shu (d. 946)
Zhao Tingyin, Chinese general (d. 949)
September 11 – Kesta Styppiotes, Byzantine general
Ali ibn Umar, sultan of Morocco
Ansegisus, archbishop of Sens (or 879)
Anselm of Farfa, Frankish abbot (approximate date)
Bertharius, Benedictine abbot and poet
Bertulf, archbishop of Trier
Dawud al-Zahiri, Muslim scholar (or 884)
Eochocán mac Áedo, king of Ulaid (Ireland)
Froila, Galician bishop
Guy II, duke of Spoleto
Han Jian, Chinese warlord
Ignatius II, patriarch of Antioch
Pi Rixiu, Chinese poet
Wang Jingchong, Chinese governor (b. 847)
Yang Fuguang, Chinese general (b. 842)
Year 883 (DCCCLXXXIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.