834
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 834 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 834 DCCCXXXIV | 
| Ab urbe condita | 1587 | 
| Armenian calendar | 283 ԹՎ ՄՁԳ | 
| Assyrian calendar | 5584 | 
| Balinese saka calendar | 755–756 | 
| Bengali calendar | 240–241 | 
| Berber calendar | 1784 | 
| Buddhist calendar | 1378 | 
| Burmese calendar | 196 | 
| Byzantine calendar | 6342–6343 | 
| Chinese calendar | 癸丑年 (Water Ox) 3531 or 3324 — to — 甲寅年 (Wood Tiger) 3532 or 3325 | 
| Coptic calendar | 550–551 | 
| Discordian calendar | 2000 | 
| Ethiopian calendar | 826–827 | 
| Hebrew calendar | 4594–4595 | 
| Hindu calendars | |
| - Vikram Samvat | 890–891 | 
| - Shaka Samvat | 755–756 | 
| - Kali Yuga | 3934–3935 | 
| Holocene calendar | 10834 | 
| Iranian calendar | 212–213 | 
| Islamic calendar | 218–219 | 
| Japanese calendar | Tenchō 11 / Jōwa 1 (承和元年) | 
| Javanese calendar | 730–731 | 
| Julian calendar | 834 DCCCXXXIV | 
| Korean calendar | 3167 | 
| Minguo calendar | 1078 before ROC 民前1078年 | 
| Nanakshahi calendar | −634 | 
| Seleucid era | 1145/1146 AG | 
| Thai solar calendar | 1376–1377 | 
| Tibetan calendar | 阴水牛年 (female Water-Ox) 960 or 579 or −193 — to — 阳木虎年 (male Wood-Tiger) 961 or 580 or −192 | 
Year 834 (DCCCXXXIV) was a common year starting on Thursday of the Julian calendar.