1175
| Years: 1172 1173 1174 - 1175 - 1176 1177 1178 | |
| Decades: 1140s 1150s 1160s - 1170s - 1180s 1190s 1200s | |
| Centuries: 11th century - 12th century - 13th century | |
Events
- Ruaidri Ua Conchobair (Rory O'Conner), last High King of Ireland, submits to Henry II as vassal of Ireland with the Treaty of Windsor
- Ly Cao Ton becomes ruler of Vietnam
- William of Tyre becomes archbishop of Tyre
- Massacre of Abergavenny ends with several noblemen dead at the hands of William de Braose
- Vordingborg Castle completed
Births
- Robert Grosseteste, English Prelate and scholar
- Andrew II, King of Hungary
- Fibonacci, famous Italian mathematician
- Michael Scot, mathematician and astrologer
- Otto IV, Holy Roman Emperor
Deaths
- Mleh of Armenia, ruler of the Armenian Kingdom of Cilicia
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