|Ab urbe condita||1952|
|Balinese saka calendar||1120–1121|
|English Regnal year||10 Ric. 1 – 1 Joh. 1|
|Chinese calendar||戊午年 (Earth Horse)|
3895 or 3835
— to —
己未年 (Earth Goat)
3896 or 3836
|- Vikram Samvat||1255–1256|
|- Shaka Samvat||1120–1121|
|- Kali Yuga||4299–4300|
|Japanese calendar||Kenkyū 10 / Shōji 1|
|Minguo calendar||713 before ROC|
|Seleucid era||1510/1511 AG|
|Thai solar calendar||1741–1742|
1325 or 944 or 172
— to —
1326 or 945 or 173
- January 13 – A short-lived truce is declared, between the Kings Richard I (the Lionheart) and Philip II (Augustus). Two of Europe's most powerful rulers meet on the banks of the Seine River, while shouting terms to one another. With a peace secured, Richard is able to refocus on bringing internal order to the south of the Angevin Empire.
- March 26 – Richard I besieges the unarmed castle of Châlus-Chabrol, and is shot in the left shoulder with a crossbow, by the French boy Pierre Basile. The war between the kingdoms of England and France has become so brutal, that Hugh of Lincoln is warned that "nothing now is safe, neither the city to dwell in nor the highway for travel".
- April 6 – Richard I dies from gangrene, caused by his crossbow wound. His younger brother, John (Lackland), becomes King of England. Richard's jewels are left to his nephew, Otto IV, King of the Romans. Mercadier, a mercenary captain and Richard's second in command, has Pierre Basile flayed alive and hanged.
- Roman Mstislavich (the Great), Grand Prince of Vladimir-Volhynia, unites his realm with its westerly neighbor Galicia (after the death of Vladimir II). He creates the Kingdom of Galicia-Volhynia more powerful than Kiev.
- Summer – Philip II renews his war against England, supporting the rival claim to the English throne of John's 12-year-old nephew Arthur I, duke of Brittany.
- May 26 – John returns to London and chooses people to help him to rule the kingdom. He appoints Archbishop Hubert Walter as his advisor and chancellor. Geoffrey Fitz Peter is chosen as Chief Justiciar and William (the Marshal) becomes Marshal of John's household. On May 27, John is crowned as king of England at Westminster Abbey.
- Summer – King William the Lion of Scotland supports John's claim to the English throne, in exchange for ownership of the northern territories (including Northumberland and Cumberland).
- January 23 – Caliph Abu Yusuf Yaqub al-Mansur dies at Marrakesh after a 15-year reign in which he has defeated the Castilian forces of King Alfonso VIII (the noble) (see 1195) and other Christian enemies in Al-Andalus. He is succeeded by his son Muhammad al-Nasir as ruler of the Almohad Caliphate (until 1213).
- February 9 – Minamoto no Yoritomo, Japanese shogun, dies at Kamakura after a 7-year reign in which he has established the Kamakura Shogunate (see 1192). He is succeeded by his 16-year-old son Minamoto no Yoriie, his grandfather Hōjō Tokimasa proclaims himself regent for Yoriie (until 1202).
- April 17 – Marie of Ponthieu, French noblewoman (d. 1250)
- Aisha Al-Manoubya, Almohad female Sufi mystic (d. 1267)
- Al-Mansur al-Hasan, Yemeni imam and politician (d. 1271)
- Bohemond V, prince of Antioch (House of Poitiers) (d. 1252)
- Ferdinand III (the Saint), king of Castile and León (d. 1252)
- Guttorm of Norway (Sigurdsson), king of Norway (d. 1204)
- Ibn al-Abbar, Andalusian biographer and historian (d. 1260)
- Isobel of Huntingdon, daughter of David of Scotland (d. 1252)
- Jalal ad-Din Mingburnu, Khwarezmid ruler (shah) (d. 1231)
- Joan of Constantinople, Flemish noblewoman (d. 1244)
- Sturla Sighvatsson, Icelandic chieftain (or goði) (d. 1238)
- Thomas II, Flemish nobleman (House of Savoy) (d. 1259)
- January 23 – Abu Yusuf Yaqub al-Mansur, Almohad caliph (b. 1160)
- February 9 – Minamoto no Yoritomo, Japanese shogun (b. 1147)
- February 13 – Stefan Nemanja, Serbian Grand Prince (b. 1113)
- March 17 – Jocelin of Glasgow (or Jocelyn), Scottish bishop
- April 5 – Ashikaga Yoshikane, Japanese samurai and monk
- April 6
- July 10 – Hugh de Roxburgh (or Hugo), Scottish bishop
- August 20 – Matthew, Scottish churchman and bishop
- September 4 – Joan of England, queen of Sicily (b. 1165)
- October 9 – Bobo of San Teodoro, Italian cardinal-deacon
- November 6 – Hatim ibn Ibrahim, Yemeni religious leader
- November 25 – Albert III (the Rich), count of Habsburg
- December 25 – Helena of Hungary, duchess of Austria
- Alexios Komnenos, son of Andronikos I (Komnenos)
- Azalais of Toulouse (or Adelaide), French noblewoman
- Benedicta Ebbesdotter of Hvide, queen of Sweden (or 1200)
- Date Tomomune, Japanese nobleman and samurai (b. 1129)
- Michael the Syrian (the Great), Syriac patriarch (b. 1126)
- Raymond IV (or Raimund), count and regent of Tripoli
- Vladimir II Yaroslavich, Kievan prince (House of Rurik)
- Palmer, Alan; Palmer, Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 73–75. ISBN 0-7126-5616-2.
- Rees, Simon (2006). "King Richard I of England Versus King Philip II Augustus". Military History (published September 2006).
- Williams, Hywel (2005). Cassell's Chronology of World History. London: Weidenfeld & Nicolson. pp. 129–131. ISBN 0-304-35730-8.
- King John by Warren. Published by University of California Press in 1961. p. 63
- Warren, Lewis (1961). King John. University of California Press. p. 48.
- A. P. Vlasto (October 2, 1970). The Entry of the Slavs Into Christendom: An Introduction to the Medieval History of the Slavs. CUP Archive. p. 219. ISBN 978-0-521-07459-9.
- S. D. Church (2003). King John: New Interpretations. Boydell & Brewer Ltd. p. 18. ISBN 978-0-85115-947-8.
- Mrs. Markham; Eliza Robbins (1854). A History of England from the first Invasion by the Romans to the 14th year of the Reign of Queen Victoria. pp. 101–.
- Edmund Lodge (1907). The Peerage, Baronetage, Knightage & Companionage of the British Empire for 1907. Kelly's Directories. p. 93.