| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 810s 820s 830s – 840s – 850s 860s 870s |
| Years: | 841 842 843 – 844 – 845 846 847 |
| 844 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 844 DCCCXLIV |
| Ab urbe condita | 1597 |
| Armenian calendar | 293 ԹՎ ՄՂԳ |
| Bahá'í calendar | -1000 – -999 |
| Bengali calendar | 251 |
| Berber calendar | 1794 |
| Buddhist calendar | 1388 |
| Burmese calendar | 206 |
| Byzantine calendar | 6352 – 6353 |
| Chinese calendar | 癸亥年十二月初八日 (3480/3540-12-8) — to —
甲子年十一月十九日(3481/3541-11-19) |
| Coptic calendar | 560 – 561 |
| Ethiopian calendar | 836 – 837 |
| Hebrew calendar | 4604 – 4605 |
| Hindu calendars | |
| - Bikram Samwat | 900 – 901 |
| - Shaka Samvat | 766 – 767 |
| - Kali Yuga | 3945 – 3946 |
| Holocene calendar | 10844 |
| Iranian calendar | 222 – 223 |
| Islamic calendar | 229 – 230 |
| Japanese calendar | |
| Korean calendar | 3177 |
| Thai solar calendar | 1387 |