1218 was a common year.
|Centuries:||12th century – 13th century – 14th century|
|Decades:||1180s 1190s 1200s – 1210s – 1220s 1230s 1240s|
|Years:||1215 1216 1217 – 1218 – 1219 1220 1221|
- Damietta is besieged by the knights of the Fifth Crusade.
- Livonian Brothers of the Sword begin to conquer Estonia.
- Minamoto no Sanetomo becomes Minister of the Right (udaijin) of Japan.
- Alfonso IX of Castile founds a university in Salamanca.