880
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 880 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 880 DCCCLXXX | 
| Ab urbe condita | 1633 | 
| Armenian calendar | 329 ԹՎ ՅԻԹ | 
| Assyrian calendar | 5630 | 
| Balinese saka calendar | 801–802 | 
| Bengali calendar | 286–287 | 
| Berber calendar | 1830 | 
| Buddhist calendar | 1424 | 
| Burmese calendar | 242 | 
| Byzantine calendar | 6388–6389 | 
| Chinese calendar | 己亥年 (Earth Pig) 3577 or 3370 — to — 庚子年 (Metal Rat) 3578 or 3371 | 
| Coptic calendar | 596–597 | 
| Discordian calendar | 2046 | 
| Ethiopian calendar | 872–873 | 
| Hebrew calendar | 4640–4641 | 
| Hindu calendars | |
| - Vikram Samvat | 936–937 | 
| - Shaka Samvat | 801–802 | 
| - Kali Yuga | 3980–3981 | 
| Holocene calendar | 10880 | 
| Iranian calendar | 258–259 | 
| Islamic calendar | 266–267 | 
| Japanese calendar | Gangyō 4 (元慶4年) | 
| Javanese calendar | 778–779 | 
| Julian calendar | 880 DCCCLXXX | 
| Korean calendar | 3213 | 
| Minguo calendar | 1032 before ROC 民前1032年 | 
| Nanakshahi calendar | −588 | 
| Seleucid era | 1191/1192 AG | 
| Thai solar calendar | 1422–1423 | 
| Tibetan calendar | 阴土猪年 (female Earth-Pig) 1006 or 625 or −147 — to — 阳金鼠年 (male Iron-Rat) 1007 or 626 or −146 | 
Year 880 (DCCCLXXX) was a leap year starting on Friday of the Julian calendar.