What Happened in 1143
- T 1
- F 2
- S 3
- S 4
- M 5
- T 6
- W 7
- T 8
- F 9
- S 10
- S 11
- M 12
- T 13
- W 14
- T 15
- F 16
- S 17
- S 18
- M 19
- T 20
- W 21
- T 22
- F 23
- S 24
- S 25
- M 26
- T 27
- W 28
- T 29
- F 30
- Oct 3 Cardinal Guido elected Pope Coelestinus II
- Oct 5 King Alfonso VII of Leon recognises Portugal as a Kingdom
- Jul 31 Emperor Nijo of Japan (d. 1165)
- Apr 8 John II Komnenos, Emperor of the Byzantine Empire (1118-43), dies in an accident at 55
- Sep 24 Agnes of Germany, daughter of Henry IV, Holy Roman Emperor (b. 1072)
- Sep 24 Innocent II [Gregorio de' Papareschi], Italian Pope (1130-43), dies
- Nov 13 King Fulk of Jerusalem (1131-1143), dies in a hunting accident