1256

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1220s 1230s 1240s – 1250s – 1260s 1270s 1280s
Years:	1253 1254 1255 – 1256 – 1257 1258 1259

1256 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments
Art and literature
1256 in poetry

Events

May 4 – Pope Alexander IV issues the papal bull Licet ecclesiae catholicae, constituting the Order of Saint Augustine at Lecceto Monastery.
The city of Lviv, in present-day Ukraine, is founded by Danylo King of Rus.
Theodore II Lascaris, Byzantine Emperor (in exile in the Empire of Nicaea), successfully concludes a military campaign started a year earlier to recover Thrace from the Bulgarians.
Abingdon School is founded.
Roger Bacon becomes a Franciscan Friar.
Church of Santa Costanza, Rome, is consecrated as a church.

October – Mongol commander Baiju (operating under Hulagu Khan's command) leads his forces in a victory over Kay Ka'us II of the Sultanate of Rüm, thereby capturing Anatolia.
December 15 – Hulagu Khan captures and destroys the Hashshashin stronghold at Alamut in present-day Iran.
Hulagu Khan establishes the Ilkhanate dynasty of Persia, which will become one of four main divisions of the Mongol Empire.
The Japanese Kenchō era ends, and the Kōgen era begins.