1170s

The 1170s was a decade that started on 1 January 1170 and ended on 31 December 1179.

Millennium:	2nd millennium
Centuries:	11th century – 12th century – 13th century
Decades:	1140s 1150s 1160s – 1170s – 1180s 1190s 1200s
Years:	1170 1171 1172 1173 1174 1175 1176 1177 1178 1179
Categories:	Births – Deaths – Architecture Establishments – Disestablishments

Events and trends

• 1170 – Assassination of Thomas à Becket
• 1171 – Saladin ends the Islamic ruling of Fatimid, bringing back Sunni rule in Egypt.
• 1179 – Third Council of the Lateran condemns Waldensians and Cathars as heretics (people who turn away from certain religious beliefs); reformation of clerical life