| Millennium: | 3rd Millennium BC |
|---|---|
| Centuries: | 28th cent. BC – 27th cent. BC – 26th cent. BC |
| Decades: | 2710s BC 2700s BC 2690s BC – 2680s BC – 2670s BC 2660s BC 2650s BC |
| Years: | 2684 BC 2683 BC 2682 BC – 2681 BC – 2680 BC 2679 BC 2678 BC |
| Gregorian calendar | 2681 MMDCLXXXI |
| Ab urbe condita | 3434 |
| Armenian calendar | 2130 ԹՎ ՍՃԼ |
| Assyrian calendar | 7431 |
| Bahá'í calendar | 837–838 |
| Bengali calendar | 2088 |
| Berber calendar | 3631 |
| British Regnal year | N/A |
| Buddhist calendar | 3225 |
| Burmese calendar | 2043 |
| Byzantine calendar | 8189–8190 |
| Chinese calendar | 庚子年 (Metal Rat) 5377 or 5317 — to — 辛丑年 (Metal Ox) 5378 or 5318 |
| Coptic calendar | 2397–2398 |
| Discordian calendar | 3847 |
| Ethiopian calendar | 2673–2674 |
| Hebrew calendar | 6441–6442 |
| Hindu calendars | |
| - Vikram Samvat | 2737–2738 |
| - Shaka Samvat | 2602–2603 |
| - Kali Yuga | 5781–5782 |
| Holocene calendar | 12681 |
| Igbo calendar | 1681–1682 |
| Iranian calendar | 2059–2060 |
| Islamic calendar | 2122–2123 |
| Japanese calendar | Heisei 693 (平成６９３年) |
| Javanese calendar | 2634–2635 |
| Juche calendar | 770 |
| Julian calendar | Gregorian minus 18 days |
| Korean calendar | 5014 |
| Minguo calendar | ROC 770 民國770年 |
| Nanakshahi calendar | 1213 |
| Thai solar calendar | 3224 |
| Unix time | 22437043200–22468579199 |
The year 2681 BC