|658 by topic|
|Ab urbe condita||1411|
|Balinese saka calendar||579–580|
|Chinese calendar||丁巳年 (Fire Snake)|
3354 or 3294
— to —
戊午年 (Earth Horse)
3355 or 3295
|- Vikram Samvat||714–715|
|- Shaka Samvat||579–580|
|- Kali Yuga||3758–3759|
|Japanese calendar||Hakuchi 9|
|Minguo calendar||1254 before ROC|
|Seleucid era||969/970 AG|
|Thai solar calendar||1200–1201|
784 or 403 or −369
— to —
785 or 404 or −368
Year 658 (DCLVIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 658 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.
- Emperor Constans II undertakes an expedition to the Balkan Peninsula, and defeats the Avars in Macedonia. He temporarily reasserts Byzantine rule, and resettles some of them in Anatolia to fight against the Rashidun Caliphate (approximate date).
- The confederation of Slavic tribes falls apart after the death of King Samo. A Slav principality is formed from the kingdom's remnants in Carinthia (modern Austria), and the Avars capture most of its territory in Hungary (approximate date).
- Battle of Peonnum: King Cenwalh and the Wessex Saxons make a push against Dumnonia (South West England). They are victorious at Penselwood in Somerset, and the Dumnonia-Wessex border is set at the River Parrett (approximate date).
- A revolt led by three Mercian noblemen (Immin, Eata, and Eadberht) installs Wulfhere (son of king Penda) as ruler of Mercia, and drives out the supporters of King Oswiu of Northumbria.
- The Chinese Buddhist monks Zhi Yu and Zhi You recreate several south-pointing chariots, for the Japanese prince Tenji. This is a 3rd-century device made by Ma Jun, and acts as a mechanical-driven directional-compass vehicle (according to the Nihon Shoki).
- Chinese forces defeat the Western Turkic Kaganate (Central Asia). The West kaganate becomes a vassal of the Tang dynasty. During the power vacuum, Turgesh tribes emerge as the leading power (approximate date).
- Cellach mac Máele Coba, high king of Ireland
- Chu Suiliang, chancellor of the Tang dynasty (b. 597)
- Clovis II, king of Neustria and Burgundy (or 657)
- Du Zhenglun, chancellor of the Tang dynasty
- Erchinoald, mayor of the Palace of Neustria
- Jajang, Korean Buddhist monk (b. 590)
- Judicael, high king of Domnonée
- Samo, king of the Slavs (Carinthia)
- Yuchi Gong, general of the Tang dynasty (b. 585)