|Covid-19|April 18 – Bolesław I Chrobry is crowned as the first king of Poland.
The North African Zirid dynasty's attempts to retake Sicily fail.
Byzantines abduct Arabs' Messina, before the death of Emperor Basil II.
Srivijaya, a partly Buddhist kingdom based in Sumatra, is attacked by the Chola Empire of southern India, in a dispute over trading rights in South-east Asia. It survives, but declines in importance.
Constantine VIII succeeds his brother Basil II as Byzantine Emperor.
August 28 – Emperor Go-Reizei of Japan (d. 1068)
Anna Dalassene, Byzantine regent (d. 1102)
Empress Agnes of Poitou, regent of the Holy Roman Empire (d. 1077)
John Italus, Byzantine philosopher (d. 1090)
June 17 – Bolesław I Chrobry, King of Poland
December 15 – Basil II, Byzantine Emperor (b. 958)
Year 1025 (MXXV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.