| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 820s 830s 840s – 850s – 860s 870s 880s |
| Years: | 847 848 849 – 850 – 851 852 853 |
| 850 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 850 DCCCL |
| Ab urbe condita | 1603 |
| Armenian calendar | 299 ԹՎ ՄՂԹ |
| Bahá'í calendar | -994 – -993 |
| Bengali calendar | 257 |
| Berber calendar | 1800 |
| Buddhist calendar | 1394 |
| Burmese calendar | 212 |
| Byzantine calendar | 6358 – 6359 |
| Chinese calendar | 己巳年閏十一月十四日 (3486/3546-intercalary 11-14) — to —
庚午年十一月廿四日(3487/3547-11-24) |
| Coptic calendar | 566 – 567 |
| Ethiopian calendar | 842 – 843 |
| Hebrew calendar | 4610 – 4611 |
| Hindu calendars | |
| - Bikram Samwat | 906 – 907 |
| - Shaka Samvat | 772 – 773 |
| - Kali Yuga | 3951 – 3952 |
| Holocene calendar | 10850 |
| Iranian calendar | 228 – 229 |
| Islamic calendar | 235 – 236 |
| Japanese calendar | |
| Korean calendar | 3183 |
| Thai solar calendar | 1393 |