| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 806 DCCCVI |
| Ab urbe condita | 1559 |
| Armenian calendar | 255 ԹՎ ՄԾԵ |
| Assyrian calendar | 5556 |
| Bengali calendar | 213 |
| Berber calendar | 1756 |
| Buddhist calendar | 1350 |
| Burmese calendar | 168 |
| Byzantine calendar | 6314–6315 |
| Chinese calendar |
乙酉年 (Wood Rooster) 3502 or 3442 — to — 丙戌年 (Fire Dog) 3503 or 3443 |
| Coptic calendar | 522–523 |
| Discordian calendar | 1972 |
| Ethiopian calendar | 798–799 |
| Hebrew calendar | 4566–4567 |
| Hindu calendars | |
| - Vikram Samvat | 862–863 |
| - Shaka Samvat | 727–728 |
| - Kali Yuga | 3906–3907 |
| Holocene calendar | 10806 |
| Iranian calendar | 184–185 |
| Islamic calendar | 190–191 |
| Japanese calendar |
Enryaku 25 / Daidō 1 (大同元年) |
| Javanese calendar | 701–703 |
| Julian calendar | 806 DCCCVI |
| Korean calendar | 3139 |
| Minguo calendar | 1106 before ROC 民前1106年 |
| Nanakshahi calendar | −662 |
| Seleucid era | 1117/1118 AG |
| Thai solar calendar | 1348–1349 |
Year 806 (DCCCVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.