| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1931 by topic |
|---|
| Subject |
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| By country |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1931 MCMXXXI |
| Ab urbe condita | 2684 |
| Armenian calendar | 1380 ԹՎ ՌՅՁ |
| Assyrian calendar | 6681 |
| Baháʼí calendar | 87–88 |
| Balinese saka calendar | 1852–1853 |
| Bengali calendar | 1338 |
| Berber calendar | 2881 |
| British Regnal year | 21 Geo. 5 – 22 Geo. 5 |
| Buddhist calendar | 2475 |
| Burmese calendar | 1293 |
| Byzantine calendar | 7439–7440 |
| Chinese calendar | 庚午年 (Metal Horse) 4628 or 4421 — to — 辛未年 (Metal Goat) 4629 or 4422 |
| Coptic calendar | 1647–1648 |
| Discordian calendar | 3097 |
| Ethiopian calendar | 1923–1924 |
| Hebrew calendar | 5691–5692 |
| Hindu calendars | |
| - Vikram Samvat | 1987–1988 |
| - Shaka Samvat | 1852–1853 |
| - Kali Yuga | 5031–5032 |
| Holocene calendar | 11931 |
| Igbo calendar | 931–932 |
| Iranian calendar | 1309–1310 |
| Islamic calendar | 1349–1350 |
| Japanese calendar | Shōwa 6 (昭和６年) |
| Javanese calendar | 1861–1862 |
| Juche calendar | 20 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4264 |
| Minguo calendar | ROC 20 民國20年 |
| Nanakshahi calendar | 463 |
| Thai solar calendar | 2473–2474 |
| Tibetan calendar | 阳金马年 (male Iron-Horse) 2057 or 1676 or 904 — to — 阴金羊年 (female Iron-Goat) 2058 or 1677 or 905 |
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1931 (MCMXXXI) was a common year starting on Thursday of the Gregorian calendar, the 1931st year of the Common Era (CE) and Anno Domini (AD) designations, the 931st year of the 2nd millennium, the 31st year of the 20th century, and the 2nd year of the 1930s decade.