912
Year 912 was a leap year starting on Wednesday of the Julian calendar.
Events
By place
Byzantine Empire
- May 11 - Emperor Leo VI dies after a 26-year reign, in which he has completed the Byzantine code of laws. He is succeeded by his brother Alexander III as emperor alongside Leo's 6-year-old son Constantine VII. Alexander becomes de facto ruler of the Byzantine Empire and expels Empress Zoe Karbonopsina, the mother of Constantine, from the palace and exiles her to a nunnery.
Europe
- German dukes Henry the Fowler of Saxony and Arnulf I of Bavaria claim themselves to be sovereign princes, not recognizing the authority of their overlord, King Conrad I of the East Frankish Kingdom, as he is not a Carolingian. Duke Erchanger II of Swabia and Conrad's brother, Duke Eberhard III of Franconia, support the Conradines.
- Orso II Participazio becomes the doge of Venice. He sends his son Pietro to Constantinople in order to re-establish the relationship with Alexander III.
- King Ordoño II of Galicia continues his expansion of the Christian polity. He sacks the cities of Mérida and Évora.
Britain
- Lady Æthelflæd expands her policy by building defensive burghs at Shrewsbury and Bridgnorth. The fortifications are needed to protect Mercia against plundering Vikings from the Danelaw.
Arabian Empire
- October 16 - Abd al-Rahman III succeeds his grandfather Abdullah ibn Muhammad and becomes emir of Córdoba.
- The second rebellion in two years, of the Kutama tribesmen against the Fatimid Caliphate, occurs.
China
- July 18 - Emperor Taizu is murdered in the imperial palace at Kaifeng by his eldest living son Zhu Yougui after a 5-year reign. He succeeds his father as the ruler of Later Liang.
By topic
Religion
- Euthymius I is deposed as Patriarch of Constantinople, and Nicholas Mystikos is restored.
Births
- November 23 - Otto I, emperor of the Holy Roman Empire
- Alberic II, princeps and duke of Spoleto
- Frederick I, duke of Upper Lorraine
- Hyejong, king of Goryeo
- Ma Xichong, governor and ruler of Chu
- Minamoto no Mitsunaka, Japanese nobleman and samurai
- Nakatsukasa, Japanese waka poet
- Nikephoros II, emperor of the Byzantine Empire
- Pelagius of Córdoba, Christian martyr
- Ryōgen, Japanese monk and abbot
- Willa of Tuscany, queen consort of Italy
- Xue Juzheng, Chinese scholar-official and historian
Deaths
- May 11 - Leo VI, emperor of the Byzantine Empire
- May 25 - Xue Yiju, chancellor of Later Liang
- July 18 - Zhu Wen, emperor of Later Liang
- August 15 - Han Jian, Chinese warlord
- October 15 - Abdullah ibn Muhammad, Muslim emir
- October 25 - Rudolph I, king of Burgundy
- November 30 - Otto I, duke of Saxony
- Ahmad ibn Yusuf, Muslim mathematician
- Guanxiu, Chinese Buddhist monk and poet
- Hermenegildo Gutiérrez, Galician nobleman
- Hyogong, king of Silla
- Ibn Khordadbeh, Persian geographer
- Notker the Stammerer, Benedictine monk
- Oleg of Novgorod, Varangian prince
- Pietro Tribuno, doge of Venice
- Qusta ibn Luqa, Syrian Melkite physician
- Rudalt, Breton nobleman
- Smbat I, king of Armenia
- Wilferth, bishop of Lichfield
- Zhang Ce, chancellor of Later Liang
- Zhu Youwen, prince of Later Liang