827
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 827 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 827 DCCCXXVII | 
| Ab urbe condita | 1580 | 
| Armenian calendar | 276 ԹՎ ՄՀԶ | 
| Assyrian calendar | 5577 | 
| Balinese saka calendar | 748–749 | 
| Bengali calendar | 233–234 | 
| Berber calendar | 1777 | 
| Buddhist calendar | 1371 | 
| Burmese calendar | 189 | 
| Byzantine calendar | 6335–6336 | 
| Chinese calendar | 丙午年 (Fire Horse) 3524 or 3317 — to — 丁未年 (Fire Goat) 3525 or 3318 | 
| Coptic calendar | 543–544 | 
| Discordian calendar | 1993 | 
| Ethiopian calendar | 819–820 | 
| Hebrew calendar | 4587–4588 | 
| Hindu calendars | |
| - Vikram Samvat | 883–884 | 
| - Shaka Samvat | 748–749 | 
| - Kali Yuga | 3927–3928 | 
| Holocene calendar | 10827 | 
| Iranian calendar | 205–206 | 
| Islamic calendar | 211–212 | 
| Japanese calendar | Tenchō 4 (天長4年) | 
| Javanese calendar | 723–724 | 
| Julian calendar | 827 DCCCXXVII | 
| Korean calendar | 3160 | 
| Minguo calendar | 1085 before ROC 民前1085年 | 
| Nanakshahi calendar | −641 | 
| Seleucid era | 1138/1139 AG | 
| Thai solar calendar | 1369–1370 | 
| Tibetan calendar | 阳火马年 (male Fire-Horse) 953 or 572 or −200 — to — 阴火羊年 (female Fire-Goat) 954 or 573 or −199 | 
Year 827 (DCCCXXVII) was a common year starting on Tuesday of the Julian calendar.