| Millennium: | 4th Millennium BC |
|---|---|
| Centuries: | 35th cent. BC – 34th cent. BC – 33rd cent. BC |
| Decades: | 3370s BC 3360s BC 3350s BC – 3340s BC – 3330s BC 3320s BC 3310s BC |
| Years: | 3343 BC 3342 BC 3341 BC – 3340 BC – 3339 BC 3338 BC 3337 BC |
| Gregorian calendar | 3340 MMMCCCXL |
| Ab urbe condita | 4093 |
| Armenian calendar | 2789 ԹՎ ՍՉՁԹ |
| Assyrian calendar | 8090 |
| Bahá'í calendar | 1496–1497 |
| Bengali calendar | 2747 |
| Berber calendar | 4290 |
| British Regnal year | N/A |
| Buddhist calendar | 3884 |
| Burmese calendar | 2702 |
| Byzantine calendar | 8848–8849 |
| Chinese calendar | 己亥年 (Earth Pig) 6036 or 5976 — to — 庚子年 (Metal Rat) 6037 or 5977 |
| Coptic calendar | 3056–3057 |
| Discordian calendar | 4506 |
| Ethiopian calendar | 3332–3333 |
| Hebrew calendar | 7100–7101 |
| Hindu calendars | |
| - Vikram Samvat | 3396–3397 |
| - Shaka Samvat | 3261–3262 |
| - Kali Yuga | 6440–6441 |
| Holocene calendar | 13340 |
| Igbo calendar | 2340–2341 |
| Iranian calendar | 2718–2719 |
| Islamic calendar | 2801–2802 |
| Japanese calendar | Heisei 1352 (平成１３５２年) |
| Javanese calendar | 3313–3314 |
| Juche calendar | 1429 |
| Julian calendar | Gregorian minus 23 days |
| Korean calendar | 5673 |
| Minguo calendar | ROC 1429 民國1429年 |
| Nanakshahi calendar | 1872 |
| Thai solar calendar | 3883 |
| Unix time | 43233004800–43264627199 |
The year 3340 BC