| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 780s 790s 800s – 810s – 820s 830s 840s |
| Years: | 816 817 818 – 819 – 820 821 822 |
| 819 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 819 DCCCXIX |
| Ab urbe condita | 1572 |
| Armenian calendar | 268 ԹՎ ՄԿԸ |
| Bahá'í calendar | -1025 – -1024 |
| Bengali calendar | 226 |
| Berber calendar | 1769 |
| Buddhist calendar | 1363 |
| Burmese calendar | 181 |
| Byzantine calendar | 6327 – 6328 |
| Chinese calendar | 戊戌年十二月初二日 (3455/3515-12-2) — to —
己亥年十二月十一日(3456/3516-12-11) |
| Coptic calendar | 535 – 536 |
| Ethiopian calendar | 811 – 812 |
| Hebrew calendar | 4579 – 4580 |
| Hindu calendars | |
| - Bikram Samwat | 875 – 876 |
| - Shaka Samvat | 741 – 742 |
| - Kali Yuga | 3920 – 3921 |
| Holocene calendar | 10819 |
| Iranian calendar | 197 – 198 |
| Islamic calendar | 203 – 204 |
| Japanese calendar | |
| Korean calendar | 3152 |
| Thai solar calendar | 1362 |
The year 819 AD has the following notable benchmarks: