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|951 by topic|
|Ab urbe condita||1704|
|Balinese saka calendar||872–873|
|Chinese calendar||庚戌年 (Metal Dog)|
3647 or 3587
— to —
辛亥年 (Metal Pig)
3648 or 3588
|- Vikram Samvat||1007–1008|
|- Shaka Samvat||872–873|
|- Kali Yuga||4051–4052|
|Japanese calendar||Tenryaku 5|
|Minguo calendar||961 before ROC|
|Seleucid era||1262/1263 AG|
|Thai solar calendar||1493–1494|
1077 or 696 or −76
— to —
1078 or 697 or −75
- King Berengar II of Italy seizes Liguria, with help from the feudal lord Oberto I. He reorganizes the territories south of the Po River, dividing them into three new marches (frontier districts), named after their respective margraves: the Marca Aleramica, the Marca Arduinica, and the Marca Obertenga. The last division consists of Lombardy with the cities of Genoa, Luni, Tortona, Parma, and Piacenza. Berengar forces Adelaide, the widow of Lothair II, to marry his son Adalbert. However, she fiercely refuses and Berengar has her imprisoned at Garda Castle. With the help of Count Adalbert Atto of Canossa Adelaide manages to escape.
- Fall – King Otto I crosses the Brenner Pass and takes his army into Italy. He is accompanied by his brothers, Henry I (duke of Bavaria), Bruno I, and Conrad the Red (duke of Lotharingia). Otto faces no opposition and they arrive in Pavia. Berengar II has departed the day before and entrenched himself in San Marino. Otto receives the homage of the Italian nobility, marries Adelaide, and declares himself King of the Lombards.
- Otto I dispatches an embassy to Rome to apply for an imperial coronation with Pope Agapetus II – but Prince Alberic II makes it clear that this is not possible (afraid of Otto's growing power), and opposes the request.
- February 9 – The Northern Han Kingdom is founded by Liu Chong (called Shizu) in modern-day Shanxi who restores the diplomatic relations with the Khitans. Northern Han becomes a protectorate of the Liao Dynasty.
- February 13 – Guo Wei, a court official, leads a military coup and declares himself emperor of the new Later Zhou. The 19-year-old Emperor Liu Chengyou is killed after a 3-year reign, ending the short-lived Later Han.
- Emperor Shi Zong successfully repels a Chinese advance from the south. In October he is killed by a rebellious nephew after a three year reign. Shi Zong is succeeded by his uncle Mu Zong as ruler of the Liao Dynasty.
- November 16 – Emperor Li Jing sends a Southern Tang expeditionary force (10,000 men) under Bian Hao to conquer Chu. Li Jing removes the ruling family to his own capital in Nanjing, ending the Chu Kingdom.
- Abd ar-Rahman III signs a peace in 951 with the new king of León, Ordoño III, in order to have a free hand against the Fatimids, whose ships are harassing the caliphal fleet in the Mediterranean and had even launched an assault against Almeria. Abd ar-Rahman's force, led by prime minister Ahmad ibn Said, besieges the Fatimid port of Tunis, which purchases its safety through a huge sum.
- Abu Talib Yahya, Muslim imam of the Zaydiyyah sect (d. 1033)
- Gaston II Centule, viscount of Béarn (approximate date)
- Gregory of Narek, Armenian monk and theologian (d. 1003)
- Henry II (the Wrangler), duke of Bavaria (d. 995)
- Ibn al-Kattani, Moorish scholar and physician (d. 1029)
- Liu Chenggui, official of the Song Dynasty (d. 1016)
- Romuald, founder of the Camaldolese order (approximate date)
- Sidi Mahrez, Muslim scholar and 'protector' (wali) (d. 1022)
- Zhao Dezhao (Yi of Yan), prince of the Song Dynasty (d. 979)
- January 1 – Ramiro II, king of León and Galicia
- January 2
- January 25 – Ma Xiguang, ruler of Chu (Ten Kingdoms)
- February 24 – Liu Yun, Chinese governor (jiedushi)
- March 12 – Ælfheah the Bald, bishop of Winchester
- June 7 – Lu Wenji, Chinese chancellor (b. 876)
- June 8 – Zhao Ying, Chinese chancellor (b. 885)
- October 7
- October 8 – Xiao Sagezhi, Chinese Khitan empress
- Cadwgan ab Owain, king of Glywysing (Wales)
- Cennétig mac Lorcáin, king of Tuadmumu (Ireland)
- Gofraid mac Sitriuc, Viking king of Dublin (Ireland)
- Wang Chuhui, Chinese chief of staff (shumishi)
- Wang Yanzheng, emperor of Min (approximate date)