| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 820s 830s 840s – 850s – 860s 870s 880s |
| Years: | 853 854 855 – 856 – 857 858 859 |
| 856 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 856 DCCCLVI |
| Ab urbe condita | 1609 |
| Armenian calendar | 305 ԹՎ ՅԵ |
| Bahá'í calendar | -988 – -987 |
| Bengali calendar | 263 |
| Berber calendar | 1806 |
| Buddhist calendar | 1400 |
| Burmese calendar | 218 |
| Byzantine calendar | 6364 – 6365 |
| Chinese calendar | 乙亥年十一月二十日 (3492/3552-11-20) — to —
丙子年十二月初一日(3493/3553-12-1) |
| Coptic calendar | 572 – 573 |
| Ethiopian calendar | 848 – 849 |
| Hebrew calendar | 4616 – 4617 |
| Hindu calendars | |
| - Bikram Samwat | 912 – 913 |
| - Shaka Samvat | 778 – 779 |
| - Kali Yuga | 3957 – 3958 |
| Holocene calendar | 10856 |
| Iranian calendar | 234 – 235 |
| Islamic calendar | 241 – 242 |
| Japanese calendar | |
| Korean calendar | 3189 |
| Thai solar calendar | 1399 |