1023

Year 1023 (MXXIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.

Millennium:	2nd millennium
Centuries:	10th century – 11th century – 12th century
Decades:	990s  1000s  1010s  – 1020s –  1030s  1040s  1050s
Years:	1020 1021 1022 – 1023 – 1024 1025 1026

Kou Zhun ('Pingzhong) '(c. 961–1023)

Europe

• The Judge-Governor of Seville takes advantage of the break up of the Caliphate of Córdoba, and takes power as Abbad I, founding the Abbadid dynasty.
• Abd ar-Rahman V becomes Caliph at Córdoba.

Asia

• The Ghaznavid Empire occupies Transoxiana.

Africa

• Soon after returning from Mecca, the Tarsina king of Zanata, a mountain kingdom between Algeria and Morocco, is killed in battle.

Births

• William VII, Duke of Aquitaine (d. 1058)

Deaths

• Wulfstan II, Archbishop of York
• Oda of Haldensleben, wife of Mieszko I of Poland
• Llywelyn ap Seisyll, King of Gwynedd
• Sitt al-Mulk, regent of the Fatimid Caliphate (1021 to 1023) for ʻAlī az-Zāhir, the Seventh Caliph (1021 to 1036)