844
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 844 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 844 DCCCXLIV | 
| Ab urbe condita | 1597 | 
| Armenian calendar | 293 ԹՎ ՄՂԳ | 
| Assyrian calendar | 5594 | 
| Balinese saka calendar | 765–766 | 
| Bengali calendar | 250–251 | 
| Berber calendar | 1794 | 
| Buddhist calendar | 1388 | 
| Burmese calendar | 206 | 
| Byzantine calendar | 6352–6353 | 
| Chinese calendar | 癸亥年 (Water Pig) 3541 or 3334 — to — 甲子年 (Wood Rat) 3542 or 3335 | 
| Coptic calendar | 560–561 | 
| Discordian calendar | 2010 | 
| Ethiopian calendar | 836–837 | 
| Hebrew calendar | 4604–4605 | 
| Hindu calendars | |
| - Vikram Samvat | 900–901 | 
| - Shaka Samvat | 765–766 | 
| - Kali Yuga | 3944–3945 | 
| Holocene calendar | 10844 | 
| Iranian calendar | 222–223 | 
| Islamic calendar | 229–230 | 
| Japanese calendar | Jōwa 11 (承和11年) | 
| Javanese calendar | 741–742 | 
| Julian calendar | 844 DCCCXLIV | 
| Korean calendar | 3177 | 
| Minguo calendar | 1068 before ROC 民前1068年 | 
| Nanakshahi calendar | −624 | 
| Seleucid era | 1155/1156 AG | 
| Thai solar calendar | 1386–1387 | 
| Tibetan calendar | 阴水猪年 (female Water-Pig) 970 or 589 or −183 — to — 阳木鼠年 (male Wood-Rat) 971 or 590 or −182 | 
Year 844 (DCCCXLIV) was a leap year starting on Tuesday of the Julian calendar.