From Infogalactic: the planetary knowledge core
|Centuries:||12th century – 13th century – 14th century|
|Decades:||1180s 1190s 1200s – 1210s – 1220s 1230s 1240s|
|Years:||1215 1216 1217 – 1218 – 1219 1220 1221|
|1218 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1218 in poetry|
|Ab urbe condita||1971|
|English Regnal year||2 Hen. 3 – 3 Hen. 3|
|Chinese calendar||丁丑年 (Fire Ox)
3914 or 3854
— to —
戊寅年 (Earth Tiger)
3915 or 3855
|- Vikram Samvat||1274–1275|
|- Shaka Samvat||1140–1141|
|- Kali Yuga||4319–4320|
|Japanese calendar||Kenpō 6
|Minguo calendar||694 before ROC
|Thai solar calendar||1760–1761|
|Wikimedia Commons has media related to 1218.|
- May 24 – The Fifth Crusade leaves Acre for Egypt.
- Damietta is besieged by the knights of the Fifth Crusade.
- Minamoto no Sanetomo becomes Udaijin of Japan.
- The Kara-Khitan Khanate is destroyed by Genghis Khan's Mongolian cavalry.
- Genghis Khan's Mongols, under the leadership of his eldest son Jochi, conduct a second campaign against the Kyrgyz.
- Genghis Khan proposes to the Khwarazm shah of Persia that he accept Mongol overlordship and establish trade relations.
- March – Treaty of Worcester recognises Llywelyn the Great as regent of south Wales.
- July – Spain: In order to facilitate the movement of Reconquista, Pope Honorius III reverses Innocent III’s earlier judgement and declares Ferdinand III of Castile legitimate heir to the Kingdom of Leon.
- The northern French city of Rheims emits the first recorded public life annuity in medieval Europe. Theretofore, this type of instrument had been mostly issued by religious institutions. The emission by Rheims is the first evidence of a consolidation of public debt that is to become common in the Langue d'Oïl, the Low Countries and Germany.
- February 12 – Kujo Yoritsune, Japanese shogun (d. 1256)
- May 1
- October 30 – Emperor Chūkyō of Japan (d. 1234)
- Abel of Denmark (d. 1252)
- Sir Maurice de Berkeley, English knight (d. 1281)
- January 10 – Hugh I of Cyprus
- February 2 – Konstantin of Rostov, Prince of Novgorod (b. 1186)
- February 18 – Berthold V, Duke of Zähringen (b. 1160)
- May 19 – Otto IV, Holy Roman Emperor
- June 25 – Simon de Montfort, 5th Earl of Leicester, French crusader (b. 1160)
- July 6 – Eudes III, Duke of Burgundy (b. 1166)
- August 31 – Al-Adil I, Egyptian general and ruler, Sultan of Egypt, Syria and northern Mesopotamia (b. 1145)
- November 12 – Henry de Abergavenny, Prior of Abergavenny and Bishop of Llandaff
- December 28 – Robert II, Count of Dreux (b. 1154)
- December 30 – Richard de Clare, 4th Earl of Hertford, English politician (b. 1162)
- "BBC Wales History". Archived from the original on November 25, 2007. Retrieved December 10, 2007.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
- Linehan, Peter (1999). "Chapter 21: Castile, Portugal and Navarre". In David Abulafia (ed.). The New Cambridge Medieval History c.1198-c.1300. Cambridge: Cambridge University Press. pp. 668–671. ISBN 0-521-36289-X.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
- Zuijderduijn, Jaco (2009). Medieval Capital Markets. Markets for renten, state formation and private investment in Holland (1300-1550). Leiden; Boston: Brill. ISBN 978-9-00417565-5.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>