822
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 822 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 822 DCCCXXII | 
| Ab urbe condita | 1575 | 
| Armenian calendar | 271 ԹՎ ՄՀԱ | 
| Assyrian calendar | 5572 | 
| Balinese saka calendar | 743–744 | 
| Bengali calendar | 228–229 | 
| Berber calendar | 1772 | 
| Buddhist calendar | 1366 | 
| Burmese calendar | 184 | 
| Byzantine calendar | 6330–6331 | 
| Chinese calendar | 辛丑年 (Metal Ox) 3519 or 3312 — to — 壬寅年 (Water Tiger) 3520 or 3313 | 
| Coptic calendar | 538–539 | 
| Discordian calendar | 1988 | 
| Ethiopian calendar | 814–815 | 
| Hebrew calendar | 4582–4583 | 
| Hindu calendars | |
| - Vikram Samvat | 878–879 | 
| - Shaka Samvat | 743–744 | 
| - Kali Yuga | 3922–3923 | 
| Holocene calendar | 10822 | 
| Iranian calendar | 200–201 | 
| Islamic calendar | 206–207 | 
| Japanese calendar | Kōnin 13 (弘仁13年) | 
| Javanese calendar | 718–719 | 
| Julian calendar | 822 DCCCXXII | 
| Korean calendar | 3155 | 
| Minguo calendar | 1090 before ROC 民前1090年 | 
| Nanakshahi calendar | −646 | 
| Seleucid era | 1133/1134 AG | 
| Thai solar calendar | 1364–1365 | 
| Tibetan calendar | 阴金牛年 (female Iron-Ox) 948 or 567 or −205 — to — 阳水虎年 (male Water-Tiger) 949 or 568 or −204 | 
Year 822 (DCCCXXII) was a common year starting on Wednesday of the Julian calendar.