| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 660 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 660 DCLX |
| Ab urbe condita | 1413 |
| Armenian calendar | 109 ԹՎ ՃԹ |
| Assyrian calendar | 5410 |
| Balinese saka calendar | 581–582 |
| Bengali calendar | 67 |
| Berber calendar | 1610 |
| Buddhist calendar | 1204 |
| Burmese calendar | 22 |
| Byzantine calendar | 6168–6169 |
| Chinese calendar | 己未年 (Earth Goat) 3357 or 3150 — to — 庚申年 (Metal Monkey) 3358 or 3151 |
| Coptic calendar | 376–377 |
| Discordian calendar | 1826 |
| Ethiopian calendar | 652–653 |
| Hebrew calendar | 4420–4421 |
| Hindu calendars | |
| - Vikram Samvat | 716–717 |
| - Shaka Samvat | 581–582 |
| - Kali Yuga | 3760–3761 |
| Holocene calendar | 10660 |
| Iranian calendar | 38–39 |
| Islamic calendar | 39–40 |
| Japanese calendar | Hakuchi 11 (白雉１１年) |
| Javanese calendar | 551–552 |
| Julian calendar | 660 DCLX |
| Korean calendar | 2993 |
| Minguo calendar | 1252 before ROC 民前1252年 |
| Nanakshahi calendar | −808 |
| Seleucid era | 971/972 AG |
| Thai solar calendar | 1202–1203 |
| Tibetan calendar | 阴土羊年 (female Earth-Goat) 786 or 405 or −367 — to — 阳金猴年 (male Iron-Monkey) 787 or 406 or −366 |
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.