| Millennium: | 4th Millennium BC |
|---|---|
| Centuries: | 41st cent. BC – 40th cent. BC – 39th cent. BC |
| Decades: | 3930s BC 3920s BC 3910s BC – 3900s BC – 3890s BC 3880s BC 3870s BC |
| Years: | 3909 BC 3908 BC 3907 BC – 3906 BC – 3905 BC 3904 BC 3903 BC |
| Gregorian calendar | 3906 MMMCMVI |
| Ab urbe condita | 4659 |
| Armenian calendar | 3355 ԹՎ ՎՅԾԵ |
| Assyrian calendar | 8656 |
| Bahá'í calendar | 2062–2063 |
| Bengali calendar | 3313 |
| Berber calendar | 4856 |
| British Regnal year | N/A |
| Buddhist calendar | 4450 |
| Burmese calendar | 3268 |
| Byzantine calendar | 9414–9415 |
| Chinese calendar | 乙丑年 (Wood Ox) 6602 or 6542 — to — 丙寅年 (Fire Tiger) 6603 or 6543 |
| Coptic calendar | 3622–3623 |
| Discordian calendar | 5072 |
| Ethiopian calendar | 3898–3899 |
| Hebrew calendar | 7666–7667 |
| Hindu calendars | |
| - Vikram Samvat | 3962–3963 |
| - Shaka Samvat | 3827–3828 |
| - Kali Yuga | 7006–7007 |
| Holocene calendar | 13906 |
| Igbo calendar | 2906–2907 |
| Iranian calendar | 3284–3285 |
| Islamic calendar | 3385–3386 |
| Japanese calendar | Heisei 1918 (平成１９１８年) |
| Javanese calendar | 3897–3898 |
| Juche calendar | 1995 |
| Julian calendar | Gregorian minus 28 days |
| Korean calendar | 6239 |
| Minguo calendar | ROC 1995 民國1995年 |
| Nanakshahi calendar | 2438 |
| Thai solar calendar | 4449 |
| Unix time | 61094217600–61125753599 |
The year 3906 BC