| Millennium: | 1st millennium |
|---|---|
| Centuries: | 6th century – 7th century – 8th century |
| Decades: | 630s 640s 650s – 660s – 670s 680s 690s |
| Years: | 657 658 659 – 660 – 661 662 663 |
| 660 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 660 DCLX |
| Ab urbe condita | 1413 |
| Armenian calendar | 109 ԹՎ ՃԹ |
| Assyrian calendar | 5410 |
| Bahá'í calendar | -1184–-1183 |
| Bengali calendar | 67 |
| Berber calendar | 1610 |
| English Regnal year | N/A |
| Buddhist calendar | 1204 |
| Burmese calendar | 22 |
| Byzantine calendar | 6168–6169 |
| Chinese calendar | 己未年十一月十四日 (3296/3356-11-14) — to —
庚申年十一月廿四日(3297/3357-11-24) |
| Coptic calendar | 376–377 |
| Ethiopian calendar | 652–653 |
| Hebrew calendar | 4420–4421 |
| Hindu calendars | |
| - Vikram Samvat | 716–717 |
| - Shaka Samvat | 582–583 |
| - Kali Yuga | 3761–3762 |
| Holocene calendar | 10660 |
| Iranian calendar | 38–39 |
| Islamic calendar | 39–40 |
| Japanese calendar | |
| Korean calendar | 2993 |
| Minguo calendar | 1252 before ROC 民前1252年 |
| Thai solar calendar | 1203 |
Year 660 (DCLX) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. The denomination 660 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.