Year 1122 (MCXXII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.

• February 24 – Wanyan Liang, Chinese emperor (d. 1161)^{[citation needed]}
• date unknown
  • Eleanor of Aquitaine, queen of France and England (d. 1204)^{[citation needed]}
  • Frederick I (Barbarossa), Holy Roman Emperor (d. 1190)^{[citation needed]}
  • Fujiwara no Kiyoko, Japanese empress consort (d. 1182)^{[citation needed]}
  • Ibn Hubal, Arab physician and scientist (approximate date)^[7]
  • Isaac ben Abba Mari, French Jewish rabbi (approximate date)^{[citation needed]}
  • Jayavarman VII, Cambodian ruler of the Khmer Empire (d. 1218)^{[citation needed]}

• January 18 – Christina Ingesdotter, Kievan princess^{[citation needed]}
• March 12 – Giso IV, count of Gudensberg (b. 1070)^{[citation needed]}
• May 15 – Yejong, Korean ruler of Goryeo (b. 1079)
• August 9 – Cuno of Praeneste, German cardinal^{[citation needed]}
• September 9 – Al-Hariri of Basra, Abbasid poet (b. 1054)^{[citation needed]}
• September 16 – Vitalis of Savigny, Catholic French Saint and itinerant preacher (b. 1060)^{[citation needed]}
• October 20 – Ralph d'Escures, English archbishop^{[citation needed]}
• November 8 – Ilghazi, Artuqid ruler of Mardin^{[citation needed]}
• November 28 – Ottokar II, margrave of Styria^{[citation needed]}
• December 3 – Berthold III, duke of Zähringen^{[citation needed]}
• December 4 – Henry III, duke of Carinthia^{[citation needed]}
• date unknown
  • Al-Baghawi, Persian hadith scholar and writer^{[citation needed]}
  • Alberada of Buonalbergo, duchess of Apulia^{[citation needed]}
  • John of Tours, Bishop of Wells^{[citation needed]}
  • Sybilla of Normandy, queen of Scotland^{[citation needed]}
  • Wang Jha-ji, Korean general (b. 1066)^{[citation needed]}