| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 811 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 811 DCCCXI |
| Ab urbe condita | 1564 |
| Armenian calendar | 260 ԹՎ ՄԿ |
| Assyrian calendar | 5561 |
| Balinese saka calendar | 732–733 |
| Bengali calendar | 218 |
| Berber calendar | 1761 |
| Buddhist calendar | 1355 |
| Burmese calendar | 173 |
| Byzantine calendar | 6319–6320 |
| Chinese calendar | 庚寅年 (Metal Tiger) 3508 or 3301 — to — 辛卯年 (Metal Rabbit) 3509 or 3302 |
| Coptic calendar | 527–528 |
| Discordian calendar | 1977 |
| Ethiopian calendar | 803–804 |
| Hebrew calendar | 4571–4572 |
| Hindu calendars | |
| - Vikram Samvat | 867–868 |
| - Shaka Samvat | 732–733 |
| - Kali Yuga | 3911–3912 |
| Holocene calendar | 10811 |
| Iranian calendar | 189–190 |
| Islamic calendar | 195–196 |
| Japanese calendar | Kōnin 2 (弘仁２年) |
| Javanese calendar | 707–708 |
| Julian calendar | 811 DCCCXI |
| Korean calendar | 3144 |
| Minguo calendar | 1101 before ROC 民前1101年 |
| Nanakshahi calendar | −657 |
| Seleucid era | 1122/1123 AG |
| Thai solar calendar | 1353–1354 |
| Tibetan calendar | 阳金虎年 (male Iron-Tiger) 937 or 556 or −216 — to — 阴金兔年 (female Iron-Rabbit) 938 or 557 or −215 |
Year 811 (DCCCXI) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar, the 811th year of the Common Era (CE) and Anno Domini (AD) designations, the 811th year of the 1st millennium, the 11th year of the 9th century, and the 2nd year of the 810s decade.