|Ab urbe condita||1822|
|Balinese saka calendar||990–991|
|English Regnal year||3 Will. 1 – 4 Will. 1|
|Chinese calendar||戊申年 (Earth Monkey)|
3765 or 3705
— to —
己酉年 (Earth Rooster)
3766 or 3706
|- Vikram Samvat||1125–1126|
|- Shaka Samvat||990–991|
|- Kali Yuga||4169–4170|
|Japanese calendar||Jiryaku 5 / Enkyū 1|
|Minguo calendar||843 before ROC|
|Seleucid era||1380/1381 AG|
|Thai solar calendar||1611–1612|
1195 or 814 or 42
— to —
1196 or 815 or 43
|Wikimedia Commons has media related to 1069.|
- Spring – Emperor Romanos IV begins a campaign against the Seljuk Turks and marches towards the Euphrates via Melitene. He crosses the river at Romanopolis (modern Turkey), and captures the strategic fortress city of Chliat on the north-western shore of Lake Van. Romanos leaves a Byzantine rear guard on the upper Euphrates under General Philaretos Brachamios with orders to defend the Mesopotamian frontier.
- Seljuk forces under Alp Arslan defeat the Byzantine rear guard, who advance deep into Cappadocia and Lycaonia. They plunder at will, but fail to capture the city of Iconium. Romanos retreats and returns to Constantinople. Alp Arslan takes advantage of Romanos' retreat and captures Manzikert. He recaptures the strategical fortress cities of Chliat and Van, consolidating his control over the Lake Van region.
- Spring – Romanos IV sends a Byzantine fleet (supported with an army) to relieve the siege of Bari. The Normans under Robert Guiscard defeat the Byzantines, and occupy the cities of Gravina and Obbiano in Apulia.
- February 28 – King Abbad II al-Mu'tadid dies after a 27-year reign. He is succeeded by his son Al-Mu'tamid ibn Abbad, who becomes the ruler of the Taifa of Seville in Al-Andalus (until 1091).
- Harrying of the North: King William I (the Conqueror) reacts to rebellions made by his English subjects against him. He campaigns through the north of England with his forces and burns houses, crops, cattle and land from York to Durham, which results in the deaths of over 100,000 people, mainly from starvation and winter cold.
- King Sweyn II lands with a Danish invasion fleet in Northumbria and captures York. Local rebels join the Danes and attack the two castles within the city.
- Emperor Shen Zong of the Song Dynasty appoints Wang Anshi as his chief chancellor. He implements the New Policies, which include financial and trade reforms, defense and order, institution of the baojia system, etc.
- Nam tiến, the southward expansion of the territory of Vietnam, begins when Ly Dynasty army attacks Champa, capturing King Rudravarman III.
- February 28 – Abbad II al-Mu'tadid, Abbadid king
- April 28 – Magnus II (Haraldsson), king of Norway
- August 15 – Ibn Hazm, Moorish historian (b. 994)
- September 11 – Ealdred, archbishop of York
- Dedi II (the Younger), margrave of Lower Lusatia
- Godfrey III (the Bearded), duke of Lower Lorraine
- Gytha Thorkelsdóttir, Danish noblewoman (b. 997)
- Pedro Seguin (or Seguini), bishop of Ourense
- Rhiwallon ap Cynfyn, Welsh king (approximate date)
- Robert de Comines, English nobleman
- Tilopa, Indian tantric practitioner (b. 988)
- George Finlay (1854). History of the Byzantine and Greek Empires from 1057–1453, p. 35. William Blackwood & Sons.
- Brian Todd Carey (2012). Road to Manzikert – Byzantine and Islamic Warfare (527–1071), p. 134. ISBN 978-1-84884-215-1.
- Nguyen The Anh (1989). "Le Nam tien dans les textes Vietnamiens". In Lafont, P. B. (ed.). Les frontieres du Vietnam. Paris: Edition l’Harmattan.