1254
| Years: 1251 1252 1253 - 1254 - 1255 1256 1257 | |
| Decades: 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s | |
| Centuries: 12th century - 13th century - 14th century | |
Events
- December 2 - Manfred of Sicily defeats army of Pope Innocent IV at Foggia.
- Theodore II Lascaris succeeds John III Ducas Vatatzes as Byzantine emperor.
- Byzantines defeat Bulgarians at Adrianople.
- Alkmaar granted city rights.
- Marco Polo, Venetian merchant and explorer
- May 20 - Conrad IV of Germany
- December 7 - Pope Innocent IV
- John III Ducas Vatatzes, Eastern emperor