1120
| Years: 1117 1118 1119 – 1120 – 1121 1122 1123 | |
| Decades: 1090s 1100s 1110s – 1120s – 1130s 1140s 1150s | |
| Centuries: 11th century – 12th century – 13th century | |
Events
- Welcher of Malvern creates a system of measurement for the earth using degrees, minutes, and seconds of latitude and longitude.
- Construction begins on Llandaff Cathedral in Wales
- November 25 – Wreck of the White Ship in the English Channel
Births
Deaths
- November 25 – William Adelin, son of Henry I of England (died in the White Ship wreck)
Categories: 1120