| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 871 DCCCLXXI |
| Ab urbe condita | 1624 |
| Armenian calendar | 320 ԹՎ ՅԻ |
| Assyrian calendar | 5621 |
| Bengali calendar | 278 |
| Berber calendar | 1821 |
| Buddhist calendar | 1415 |
| Burmese calendar | 233 |
| Byzantine calendar | 6379–6380 |
| Chinese calendar |
庚寅年 (Metal Tiger) 3567 or 3507 — to — 辛卯年 (Metal Rabbit) 3568 or 3508 |
| Coptic calendar | 587–588 |
| Discordian calendar | 2037 |
| Ethiopian calendar | 863–864 |
| Hebrew calendar | 4631–4632 |
| Hindu calendars | |
| - Vikram Samvat | 927–928 |
| - Shaka Samvat | 792–793 |
| - Kali Yuga | 3971–3972 |
| Holocene calendar | 10871 |
| Iranian calendar | 249–250 |
| Islamic calendar | 257–258 |
| Japanese calendar |
Jōgan 13 (貞観13年) |
| Javanese calendar | 768–770 |
| Julian calendar | 871 DCCCLXXI |
| Korean calendar | 3204 |
| Minguo calendar | 1041 before ROC 民前1041年 |
| Nanakshahi calendar | −597 |
| Seleucid era | 1182/1183 AG |
| Thai solar calendar | 1413–1414 |
Year 871 (DCCCLXXI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.