931
| Years | 
|---|
| Millennium | 
| 1st millennium | 
| Centuries | 
| Decades | 
| Years | 
| 931 by topic | 
|---|
| Leaders | 
| Categories | 
| 
 | 
| Gregorian calendar | 931 CMXXXI | 
| Ab urbe condita | 1684 | 
| Armenian calendar | 380 ԹՎ ՅՁ | 
| Assyrian calendar | 5681 | 
| Balinese saka calendar | 852–853 | 
| Bengali calendar | 337–338 | 
| Berber calendar | 1881 | 
| Buddhist calendar | 1475 | 
| Burmese calendar | 293 | 
| Byzantine calendar | 6439–6440 | 
| Chinese calendar | 庚寅年 (Metal Tiger) 3628 or 3421 — to — 辛卯年 (Metal Rabbit) 3629 or 3422 | 
| Coptic calendar | 647–648 | 
| Discordian calendar | 2097 | 
| Ethiopian calendar | 923–924 | 
| Hebrew calendar | 4691–4692 | 
| Hindu calendars | |
| - Vikram Samvat | 987–988 | 
| - Shaka Samvat | 852–853 | 
| - Kali Yuga | 4031–4032 | 
| Holocene calendar | 10931 | 
| Iranian calendar | 309–310 | 
| Islamic calendar | 318–319 | 
| Japanese calendar | Enchō 9 / Jōhei 1 (承平元年) | 
| Javanese calendar | 830–831 | 
| Julian calendar | 931 CMXXXI | 
| Korean calendar | 3264 | 
| Minguo calendar | 981 before ROC 民前981年 | 
| Nanakshahi calendar | −537 | 
| Seleucid era | 1242/1243 AG | 
| Thai solar calendar | 1473–1474 | 
| Tibetan calendar | 阳金虎年 (male Iron-Tiger) 1057 or 676 or −96 — to — 阴金兔年 (female Iron-Rabbit) 1058 or 677 or −95 | 
Year 931 (CMXXXI) was a common year starting on Saturday of the Julian calendar.