669

Year 669 (DCLXIX) was a common year starting on Monday of the Julian calendar. The denomination 669 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.

• Spring – Arab forces that have taken Chalcedon, on the Asian shore of the Bosporus, threaten the Byzantine capital Constantinople. The Muslim-Arabs are decimated by famine and disease. Yazid, the Arab commander, retreats to the island of Cyzicus (modern Turkey).

• King Ecgberht of Kent loses the overlordship of Surrey to King Wulfhere of Mercia. Ecgberht then grants the old Saxon Shore Fort at Reculver (south-east England) to a priest named Bassa, in order to establish a monastery dedicated to St. Mary (approximate date).

• November 14 – Kamatari, Japanese statesman and reformer, receives the surname Fujiwara from Emperor Tenji as a reward for his services, but dies in Yamato prefecture (modern-day Sakurai City). ^{[Significance of this event is unclear]}

• Gregory II, pope of the Catholic Church (d. 731)
• Justinian II, Byzantine emperor (approximate date)
• Qutayba ibn Muslim, Arab general (approximate date)

• November 14 – Fujiwara no Kamatari, founder of the Fujiwara clan^[1] (b. 614)
• December 31 – Li Shiji, general and chancellor of the Tang dynasty (b. 594)
• Jaruman, bishop of Mercia (approximate date)
• Mezezius, Byzantine usurper (approximate date)