1188 was a leap year.
|Centuries:||11th century – 12th century – 13th century|
|Decades:||1150s 1160s 1170s – 1180s – 1190s 1200s 1210s|
|Years:||1185 1186 1187 – 1188 – 1189 1190 1191|
- Saladin unsuccessfully besieges the Hospitaller fortress of Krak des Chevaliers in modern Syria.
- Newgate Prison is built.
- Richard Lionheart allies with Philip II of France against his father, Henry II of England.
- Giraldus Cambrensis and Baldwin of Exeter travel through Wales attempting to recruit men for the Third Crusade.
- The "Saladin tithe" is levied in England.
- Alfonso IX of Castile becomes king of Leon.
- Queen Tamar of Georgia marries David Soslan.