1023

By place

Europe

• The Judge-Governor of Seville in Al-Andalus takes advantage of the disintegration of the Caliphate of Córdoba, and seizes power as Abbad I, founding the Abbadid Dynasty.
• December - Abbad I declares the Taifa of Seville independent from Córdoban rule. Abd ar-Rahman V is proclaimed Caliph at Córdoba.

  Asia

• The Ghaznavid Empire occupies Transoxiana.

  By topic

Religion

• The Dom Church at Utrecht is severely damaged by fire. Bishop Adalbold II builds a new Romanesque style church.