|Covid-19|January 25 – Battle of the Zab: Abbasid forces under Abdallah ibn Ali defeat the Umayyads near the Great Zab River. Members of the Umayyad house are hunted down and killed. Defeated by his rivals, Caliph Marwan II flees westward to Egypt, perhaps attempting to reach Al-Andalus (Iberian Peninsula), where there are still significant Umayyad armies.
August 6 – Marwan II is caught and killed at Faiyum by supporters of the Abbasid caliph As-Saffah. Almost the entire Umayyad Dynasty is assassinated; Prince Abd al-Rahman I escapes to Al-Andalus. The Abbasids assume control of the Islamic world and establish their first capital at Kufa.
King Alfonso I of Asturias establishes the Kingdom of Galicia, in roughly the northwest of the Iberian Peninsula.
The town Slaný in the Central Bohemian Region (Czech Republic) is founded at the site of a salt spring.
King Eadberht of Northumbria imprisons Cynewulf, bishop of Lindisfarne, at Bamburgh Castle. He besieges Prince Offa, son of the late King Aldfrith, in Lindisfarne Priory. Almost dead from hunger, he is dragged from his sanctuary and put to death.
Battle of Mugdock: The Strathclyde Britons under King Teudebur defeat Prince Talorgan of the Picts. This leads to the decline of the power of King Óengus I.
The Ghana Empire begins (approximate date).
Joseph Rabban, Jewish merchant chief, arrives with a group of Babylonian Jews on the Malabar Coast. He is granted the rank of prince over the Jews of Cochin, ruling a principality in Anjuvannam, near the seaport of Cranganore (approximate date).
Gopala I is proclaimed as the first ruler and founder of the Pala Empire.
Native Americans, in the area now known as the Four Corners, begin constructing and occupying pueblos.
The city of Teotihuacan (modern Mexico) is destroyed and left in ruins, its palaces burned to the ground.
The "Western Paradise" of Amitābha Buddha, detail of a wall painting in Cave 217, Dunhuang (China), is made during the Tang Dynasty (approximate date).
In China during the Tang Dynasty, a bargeload of tea (a medicinal herb) comes up the Grand Canal to Luoyang, from Zhejiang (approximate date).
January 25 – Leo IV, Byzantine emperor (d. 780)
Abbas ibn al-Ahnaf, Abbasid poet (d. 809)
Abd al-Malik ibn Salih, Abbasid general (d. 812)
Arno, archbishop of Salzburg (approximate date)
Bermudo I, king of Asturias (approximate date)
Clement, Irish scholar and saint (approximate date)
Eigil of Fulda, Bavarian abbot (approximate date)
Hildegrim, bishop of Châlons (approximate date)
Leo III, pope of the Catholic Church (d. 816)
Sawara, Japanese prince (approximate date)
Ragnvald Sigurdsson, great-grandfather to Harald Hårfagre
Theodulf, bishop of Orléans (or 760)
Wu Shaocheng, general of the Tang Dynasty (d. 810)
January 25 – Ibrahim ibn al-Walid, Umayyad caliph
August 6 – Marwan II, Umayyad caliph (b. 688)
Abdallah ibn Abd al-Malik, Umayyad prince (or 749)
Agilulfus, bishop of Cologne (approximate date)
Al-Abbas ibn al-Walid, Umayyad prince and general
Basil the Confessor, Eastern Orthodox saint
Boruth, prince (knyaz) of Carantania (approximate date)
Bressal mac Áedo Róin, Dál Fiatach king of Ulaid
Burchard, bishop of Würzburg (approximate date)
Himelin, Scottish priest (approximate date)
Inreachtach mac Dluthach, king of Uí Maine (Ireland)
Isonokami no Otomaro, Japanese nobleman
Irene of Khazaria, Byzantine empress (approximate date)
Veborg, Scandinavian shieldmaiden (approximate date)
Year 750 (DCCL) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. The denomination 750 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.