|Centuries:||6th century – 7th century – 8th century|
|Decades:||660s 670s 680s – 690s – 700s 710s 720s|
|Years:||687 688 689 – 690 – 691 692 693|
|690 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1443|
|Chinese calendar||己丑年 (Earth Ox)
3386 or 3326
— to —
庚寅年 (Metal Tiger)
3387 or 3327
|- Vikram Samvat||746–747|
|- Shaka Samvat||612–613|
|- Kali Yuga||3791–3792|
|Minguo calendar||1222 before ROC
|Seleucid era||1001/1002 AG|
|Thai solar calendar||1232–1233|
|Wikimedia Commons has media related to 690.|
Year 690 (DCXC) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 690 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.
- King Oswine of Kent is toppled by Wihtred, brother of the late king Eadric of Kent, after a 2-year reign. He takes his lands north of the River Thames in revenge against the East Saxons (approximate date).
- October 16 – Wu Zetian ascends to the throne of the Tang Dynasty and proclaims herself ruler of the Chinese Empire as "Holy and Divine Emperor". She becomes the first and only female "emperor" in 5000 years of Chinese history. Wu Zetian changes dynasty's name to the Zhou Dynasty, and begins to murder throne pretendants and ministers who try to oppose her. During her reign she elevates the status of Buddhism to be above Taoism.
- Willibrord, Anglo-Saxon missionary, travels from York with 12 Benedictine monks to Westkapelle (modern Netherlands) to Christianize the pagan Frisians.
- September 19 – Theodore of Tarsus, age 88, dies at Canterbury. He is succeeded by Berhtwald as the 9th Archbishop of Canterbury (approximate date).
- Ashot III, Armenian prince (approximate date)
- Rhodri Molwynog ap Idwal, king of Gwynedd (approximate date)
- Aimé, Swiss bishop and saint
- Amalberga of Maubeuge, Lotharingian saint (approximate date)
- Benedict Biscop, Anglo-Saxon abbot
- Bertha of Val d'Or, Frankish abbess (approximate date)
- Julian, archbishop of Toledo (b. 642)
- Kusaila, Berber leader (approximate date)
- Landrada, Frankish abbess (approximate date)
- Nukata, Japanese poet (b. c. 630)
- Oswine, king of Kent (approximate date)
- September 19 – Theodore of Tarsus, Archbishop of Canterbury (b. 602)