849
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 849 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 849 DCCCXLIX | 
| Ab urbe condita | 1602 | 
| Armenian calendar | 298 ԹՎ ՄՂԸ | 
| Assyrian calendar | 5599 | 
| Balinese saka calendar | 770–771 | 
| Bengali calendar | 255–256 | 
| Berber calendar | 1799 | 
| Buddhist calendar | 1393 | 
| Burmese calendar | 211 | 
| Byzantine calendar | 6357–6358 | 
| Chinese calendar | 戊辰年 (Earth Dragon) 3546 or 3339 — to — 己巳年 (Earth Snake) 3547 or 3340 | 
| Coptic calendar | 565–566 | 
| Discordian calendar | 2015 | 
| Ethiopian calendar | 841–842 | 
| Hebrew calendar | 4609–4610 | 
| Hindu calendars | |
| - Vikram Samvat | 905–906 | 
| - Shaka Samvat | 770–771 | 
| - Kali Yuga | 3949–3950 | 
| Holocene calendar | 10849 | 
| Iranian calendar | 227–228 | 
| Islamic calendar | 234–235 | 
| Japanese calendar | Kashō 2 (嘉祥2年) | 
| Javanese calendar | 746–747 | 
| Julian calendar | 849 DCCCXLIX | 
| Korean calendar | 3182 | 
| Minguo calendar | 1063 before ROC 民前1063年 | 
| Nanakshahi calendar | −619 | 
| Seleucid era | 1160/1161 AG | 
| Thai solar calendar | 1391–1392 | 
| Tibetan calendar | 阳土龙年 (male Earth-Dragon) 975 or 594 or −178 — to — 阴土蛇年 (female Earth-Snake) 976 or 595 or −177 | 
Year 849 (DCCCXLIX) was a common year starting on Tuesday of the Julian calendar.