| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 770s 780s 790s – 800s – 810s 820s 830s |
| Years: | 806 807 808 – 809 – 810 811 812 |
| 809 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 809 DCCCIX |
| Ab urbe condita | 1562 |
| Armenian calendar | 258 ԹՎ ՄԾԸ |
| Bahá'í calendar | -1035 – -1034 |
| Bengali calendar | 216 |
| Berber calendar | 1759 |
| Buddhist calendar | 1353 |
| Burmese calendar | 171 |
| Byzantine calendar | 6317 – 6318 |
| Chinese calendar | 戊子年十二月十二日 (3445/3505-12-12) — to —
己丑年十一月廿一日(3446/3506-11-21) |
| Coptic calendar | 525 – 526 |
| Ethiopian calendar | 801 – 802 |
| Hebrew calendar | 4569 – 4570 |
| Hindu calendars | |
| - Bikram Samwat | 865 – 866 |
| - Shaka Samvat | 731 – 732 |
| - Kali Yuga | 3910 – 3911 |
| Holocene calendar | 10809 |
| Iranian calendar | 187 – 188 |
| Islamic calendar | 193 – 194 |
| Japanese calendar | |
| Korean calendar | 3142 |
| Thai solar calendar | 1352 |