| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 780s 790s 800s – 810s – 820s 830s 840s |
| Years: | 810 811 812 – 813 – 814 815 816 |
| 813 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 813 DCCCXIII |
| Ab urbe condita | 1566 |
| Armenian calendar | 262 ԹՎ ՄԿԲ |
| Assyrian calendar | 5563 |
| Bahá'í calendar | -1031–-1030 |
| Bengali calendar | 220 |
| Berber calendar | 1763 |
| English Regnal year | N/A |
| Buddhist calendar | 1357 |
| Burmese calendar | 175 |
| Byzantine calendar | 6321–6322 |
| Chinese calendar | 壬辰年十一月廿五日 (3449/3509-11-25) — to —
癸巳年十二月初五日(3450/3510-12-5) |
| Coptic calendar | 529–530 |
| Ethiopian calendar | 805–806 |
| Hebrew calendar | 4573–4574 |
| Hindu calendars | |
| - Vikram Samvat | 869–870 |
| - Shaka Samvat | 735–736 |
| - Kali Yuga | 3914–3915 |
| Holocene calendar | 10813 |
| Iranian calendar | 191–192 |
| Islamic calendar | 197–198 |
| Japanese calendar | |
| Korean calendar | 3146 |
| Minguo calendar | 1099 before ROC 民前1099年 |
| Thai solar calendar | 1356 |
Year 813 (DCCCXIII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.
"813" may also refer to a duology of novels by Maurice Leblanc, starring his gentleman thief Arsène Lupin.