By place

Europe

• Peace between England and Flanders is agreed upon.^[1]

British isles

• Enna mac Donnchada mac Murchada becomes King of Dublin in Ireland.
• Cu Faifne mac Congalaig becomes King of Uí Failghe in Ireland.
• Maelsechlainn Ua Faelain becomes King of the Déisi Muman in Ireland.
• The cantrefs of Rhos and Rhufoniog are annexed by Gruffudd ap Cynan, King of Gwynedd in Wales.
• The Archbishop of York is no longer required to be crowned by the Archbishop of Canterbury.
• Reconstruction begins on Peterborough Cathedral in England, destroyed by fire in 1116.^[2]

Byzantine Empire

• John II Comnenus succeeds Alexius I, as Byzantine emperor.

Eastern Europe

• Đorđe, Vojislavljević ruler of Serbia, is overthrown by Uroš I of Raška.
• George I of Duklja is overthrown by his cousin Grubeša.
• Radostl becomes Bishop of Krakow.
• Zbraslav, now part of Prague, is founded.
• Sylvester of Kiev becomes bishop of Pereyaslav.

France

• A rebellion against Henry I of England breaks out in Normandy.
• Alberich of Rheims becomes Master at the school of Rheims.
• Charles I, Count of Flanders marries Margaret of Clermont.
• Peter Abelard and Héloïse d'Argenteuil have a child and marry secretly in Paris. Her uncle Fulbert has Abelard castrated, and both Abelard and Héloïse enter religious orders.^[3]
• Amaury IV of Montfort divorces his wife Richilde, daughter of Baldwin II, Count of Hainaut.
• Wulgrin III becomes Count of Angoulême.
• Gervais becomes Count of Rethel.
• Montlhéry Castle is dismantled by Louis VI of France.

Germany

• Magdeburg is almost destroyed by fire.
• Reichenbach Abbey is founded.
• Zwickau, Eisenstadt, Kirchgandern, and Wolfenbüttel are first mentioned.
• Otto of Bamberg is suspended by the Pope, and Norbert of Xanten defends himself against charges of heresy, at the Synod of Fritzlar.

Italy

• January 24 – Pope Gelasius II succeeds Pope Paschal II as the 161st pope.
• March 10 – Gregory VIII is elected antipope.
• The cathedral of Ferentino is completed.
• The restoration of Santa Maria in Cosmedin begins.
• The economic competition between Milan and Como drives the two cities to war.

Scandinavia

• Upon the death of his brother Philip, Inge the Younger becomes sole king of Sweden.
• Þorlákur Runólfsson becomes Bishop of Skálholt.

Spain

• The Almoravids lose their control of the Ebro valley:
  • Pope Gelasius II grants the status of Crusade to the Christian effort in the Ebro Valley, attracting numerous Gascon, Occitan and Norman knights.^[4]
  • December 18 – Alfonso the Battler expels the Moors from Zaragoza.^[5]
  • The troops of Ramon Berenguer III, Count of Barcelona, led by archbishop Oleguer Bonestruga, capture Tarragona from the Moors.^[6]

Asia

East Asia

• The Genei era begins in Japan.
• The Zenghe era of Emperor Huizong of Song China ends, and the Chonghe era begins.
• The Yongning era of Emperor Chongzong of Western Xia ends.

Caucasus

• David IV of Georgia captures Lori from the Seljuk Turks.
• David IV of Georgia settles a number of Kipchaks in Georgia.

Western Asia

• June 11 – Roger of Salerno, Prince of Antioch, captures Azaz from the Seljuk Turks.
• The Byzantine general Philocales captures Sardis, from the Seljuk Sultanate of Rûm.
• Baldwin I of Jerusalem invades Egypt.
• Baldwin of Le Bourg succeeds his cousin Baldwin I, as King of Jerusalem.
• Roman of Le Puy becomes lord of Oultrejordain.
• Joscelin I succeeds Baldwin of Le Bourg, as Count of Edessa.
• Garmond of Picquigny becomes Latin Patriarch of Jerusalem.
• Suleyman I ibn al-Ghazi becomes emir of Aleppo.
• Ahmed Sanjar and Mahmud II proclaim themselves rival Seljuk sultans, upon the death of Mehmed I of Great Seljuk.
• Al-Mustarshid becomes Abbasid caliph.
• Bahram Shah becomes Ghaznavid Emperor.

South Asia

• June 29 – Vikram Chola becomes regent of the Chola kingdom.
• Battle of Kennagal: The Hoysala Empire defeats the Chalukya.