|1025 by topic|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1778|
|Balinese saka calendar||946–947|
|English Regnal year||N/A|
|Chinese calendar||甲子年 (Wood Rat)
3721 or 3661
— to —
乙丑年 (Wood Ox)
3722 or 3662
|- Vikram Samvat||1081–1082|
|- Shaka Samvat||946–947|
|- Kali Yuga||4125–4126|
|Japanese calendar||Manju 2
|Minguo calendar||887 before ROC
|Seleucid era||1336/1337 AG|
|Thai solar calendar||1567–1568|
1151 or 770 or −2
— to —
1152 or 771 or −1
|Wikimedia Commons has media related to 1025.|
- 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
- September 17 – Hugh Magnus, co-King of France (b. 1007)
- December 15 – Basil II, Byzantine Emperor (b. 958)
- Matilda of Germany, Countess Palatine of Lotharingia
- Gilbert Meynier (2010) L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518). Paris: La Découverte; pp.50.