| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 819 DCCCXIX |
| Ab urbe condita | 1572 |
| Armenian calendar | 268 ԹՎ ՄԿԸ |
| Assyrian calendar | 5569 |
| Bengali calendar | 226 |
| Berber calendar | 1769 |
| Buddhist calendar | 1363 |
| Burmese calendar | 181 |
| Byzantine calendar | 6327–6328 |
| Chinese calendar |
戊戌年 (Earth Dog) 3515 or 3455 — to — 己亥年 (Earth Pig) 3516 or 3456 |
| Coptic calendar | 535–536 |
| Discordian calendar | 1985 |
| Ethiopian calendar | 811–812 |
| Hebrew calendar | 4579–4580 |
| Hindu calendars | |
| - Vikram Samvat | 875–876 |
| - Shaka Samvat | 740–741 |
| - Kali Yuga | 3919–3920 |
| Holocene calendar | 10819 |
| Iranian calendar | 197–198 |
| Islamic calendar | 203–204 |
| Japanese calendar |
Kōnin 10 (弘仁10年) |
| Javanese calendar | 715–716 |
| Julian calendar | 819 DCCCXIX |
| Korean calendar | 3152 |
| Minguo calendar | 1093 before ROC 民前1093年 |
| Nanakshahi calendar | −649 |
| Seleucid era | 1130/1131 AG |
| Thai solar calendar | 1361–1362 |
Year 819 (DCCCXIX) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.