| Centuries: | 6th century · 7th century · 8th century |
| Decades: | 630s 640s 650s 660s 670s 680s 690s |
| Years: | 667 668 669 670 671 672 673 |
| 670 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 670 DCLXX |
| Ab urbe condita | 1423 |
| Armenian calendar | 119 ԹՎ ՃԺԹ |
| Bahá'í calendar | -1174 – -1173 |
| Bengali calendar | 77 |
| Berber calendar | 1620 |
| Buddhist calendar | 1214 |
| Burmese calendar | 32 |
| Byzantine calendar | 6178 – 6179 |
| Chinese calendar | 己巳年十二月初四日 (3306/3366-12-4) — to —
庚午年十一月十四日(3307/3367-11-14) |
| Coptic calendar | 386 – 387 |
| Ethiopian calendar | 662 – 663 |
| Hebrew calendar | 4430 – 4431 |
| Hindu calendars | |
| - Bikram Samwat | 726 – 727 |
| - Shaka Samvat | 592 – 593 |
| - Kali Yuga | 3771 – 3772 |
| Holocene calendar | 10670 |
| Iranian calendar | 48 – 49 |
| Islamic calendar | 49 – 50 |
| Japanese calendar | |
| Korean calendar | 3003 |
| Thai solar calendar | 1213 |
670 was a year of the 7th century.