| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 820s 830s 840s – 850s – 860s 870s 880s |
| Years: | 851 852 853 – 854 – 855 856 857 |
| 854 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 854 DCCCLIV |
| Ab urbe condita | 1607 |
| Armenian calendar | 303 ԹՎ ՅԳ |
| Bahá'í calendar | -990 – -989 |
| Bengali calendar | 261 |
| Berber calendar | 1804 |
| Buddhist calendar | 1398 |
| Burmese calendar | 216 |
| Byzantine calendar | 6362 – 6363 |
| Chinese calendar | 癸酉年十一月廿九日 (3490/3550-11-29) — to —
甲戌年十二月初八日(3491/3551-12-8) |
| Coptic calendar | 570 – 571 |
| Ethiopian calendar | 846 – 847 |
| Hebrew calendar | 4614 – 4615 |
| Hindu calendars | |
| - Bikram Samwat | 910 – 911 |
| - Shaka Samvat | 776 – 777 |
| - Kali Yuga | 3955 – 3956 |
| Holocene calendar | 10854 |
| Iranian calendar | 232 – 233 |
| Islamic calendar | 239 – 240 |
| Japanese calendar | |
| Korean calendar | 3187 |
| Thai solar calendar | 1397 |