Year 1018 (MXVIII) was a common year starting on Wednesday (liNk will display the full calendar) of the Julian calendar.
|Centuries:||10th century – 11th century – 12th century|
|Decades:||980s 990s 1000s – 1010s – 1020s 1030s 1040s|
|Years:||1015 1016 1017 – 1018 – 1019 1020 1021|
- The Liao Dynasty invades Goryeo.
- Largest amphibious invasion force in history at the time. Chola army that invaded Lanka (Sri Lanka) with a massive manpower of 150,000 troops.
- Battle of Kwiju: Korean General Gang Gam-chan gains a victory over Liao Dynasty forces during the Third Goryeo-Khitan War.
- January 30 – The Peace of Bautzen is signed between Poland and Germany.
- July 22–23 – Bolesław I Chrobry, Duke of Poland, defeats Yaroslav the Wise in the Battle of the River Bug. Yaroslav retreats to Novogrod, abandoning Kiev.
- July 29 – Dirk III, Count of Holland, defeats an army sent by Henry II, Holy Roman Emperor, in the Battle of Vlaardingen.
- August – Leader of the remaining Bulgarian resistance, Ivats, is blinded and captured by strategos Eustathios Daphnomeles, confirming Bulgaria's position as part of the Byzantine Empire.
- August 14 – Bolesław accepts the surrender of Kiev by the Pechenegs. He reinstates Sviatopolk as Grand Prince of Kiev.
- c. October? – In Southern Italy, at the second battle of Cannae, the Lombard adventurer Melus of Bari and his Norman mercenaries are defeated by the Byzantine army led by the Catepan Basil Boioannes.
- Probable date
- Battle of Carham: Malcolm II of Scotland and Owen the Bald of Strathclyde are victorious over Eadwulf Cudel, Earl of Bamburgh, confirming Scottish dominance over Lothian.
- Cnut replaces his brother Harald II of Denmark on the Danish throne.
- Buckfast Abbey is founded.
- The city of Koblenz is given to the archbishop of Trier.
- Harthacanute (or 1019) (d. 1042)
- Michael Psellus, Greek philosopher and historian
- June 23 – Margrave Henry I of Austria
- Aeddan ap Blegywryd, King of Gwynedd
- Harald II of Denmark
- ↑ Kleinhenz, Christopher (2010). Medieval Italy: an encyclopedia. New York: Routledge. p. 95. ISBN 978-0-415-93930-0.
- ↑ Williams, Hywel (2005). Cassell's Chronology of World History. London: Weidenfeld & Nicolson. pp. 105–106. ISBN 978-0-304-35730-7.