| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 840s 850s 860s – 870s – 880s 890s 900s |
| Years: | 874 875 876 – 877 – 878 879 880 |
| 877 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 877 DCCCLXXVII |
| Ab urbe condita | 1630 |
| Armenian calendar | 326 ԹՎ ՅԻԶ |
| Bahá'í calendar | -967 – -966 |
| Bengali calendar | 284 |
| Berber calendar | 1827 |
| Buddhist calendar | 1421 |
| Burmese calendar | 239 |
| Byzantine calendar | 6385 – 6386 |
| Chinese calendar | 丙申年十二月十三日 (3513/3573-12-13) — to —
丁酉年十一月廿三日(3514/3574-11-23) |
| Coptic calendar | 593 – 594 |
| Ethiopian calendar | 869 – 870 |
| Hebrew calendar | 4637 – 4638 |
| Hindu calendars | |
| - Bikram Samwat | 933 – 934 |
| - Shaka Samvat | 799 – 800 |
| - Kali Yuga | 3978 – 3979 |
| Holocene calendar | 10877 |
| Iranian calendar | 255 – 256 |
| Islamic calendar | 263 – 264 |
| Japanese calendar | |
| Korean calendar | 3210 |
| Thai solar calendar | 1420 |