|Centuries:||6th century – 7th century – 8th century|
|Decades:||640s 650s 660s – 670s – 680s 690s 700s|
|Years:||667 668 669 – 670 – 671 672 673|
|670 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1423|
|English Regnal year||N/A|
— to —庚午年十一月十四日
|- Vikram Samvat||726–727|
|- Shaka Samvat||592–593|
|- Kali Yuga||3771–3772|
|- Ǹrí Ìgbò||-330–-329|
|Juche calendar||N/A (before 1912)|
|Julian calendar||670 DCLXX|
|Minguo calendar||1242 before ROC
|Thai solar calendar||1213|
|Wikimedia Commons has media related to: 670|
Year 670 (DCLXX) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 670 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.
- On the death of his brother Clotaire, Childeric II becomes king of all of the Frankish kingdoms (Austrasia, Neustria and Burgundy).
- Battle of Dafei River: A Tang Chinese army is annihilated by the Tibetans, who take over control of the Tarim Basin.
- A Goguryeo restoration movement, led by Geom Mojam in northern Korea, places Anseung on the throne.
- A family register, Kogo-nenjaku, is prepared in Japan.
- Hōryū-ji, the Buddhist temple in Japan, burns down; its reconstruction is immediately begun.
- The diocese of Dorchester-on-Thames in England is replaced by the Diocese of Winchester.
- Oswiu, king of Northumbria, Bretwalda
- Clotaire III, king of Neustria and Burgundy
- Al-Khansa, Arab poet
- Li Chunfeng
- St. Omer