| Millennium: | 2nd Millennium |
|---|---|
| Centuries: | 19th cent. – 20th cent. – 21st cent. |
| Decades: | 1910s 1920s 1930s – 1940s – 1950s 1960s 1970s |
| Years: | 1937 1938 1939 – 1940 – 1941 1942 1943 |
| Gregorian calendar | 1940 MCMXL |
| Ab urbe condita | 2693 |
| Armenian calendar | 1389 ԹՎ ՌՅՁԹ |
| Assyrian calendar | 6690 |
| Bahá'í calendar | 96–97 |
| Bengali calendar | 1347 |
| Berber calendar | 2890 |
| British Regnal year | 4 Geo. 6 – 5 Geo. 6 |
| Buddhist calendar | 2484 |
| Burmese calendar | 1302 |
| Byzantine calendar | 7448–7449 |
| Chinese calendar | 己卯年 (Earth Rabbit) 4636 or 4576 — to — 庚辰年 (Metal Dragon) 4637 or 4577 |
| Coptic calendar | 1656–1657 |
| Discordian calendar | 3106 |
| Ethiopian calendar | 1932–1933 |
| Hebrew calendar | 5700–5701 |
| Hindu calendars | |
| - Vikram Samvat | 1996–1997 |
| - Shaka Samvat | 1861–1862 |
| - Kali Yuga | 5040–5041 |
| Holocene calendar | 11940 |
| Igbo calendar | 940–941 |
| Iranian calendar | 1318–1319 |
| Islamic calendar | 1358–1359 |
| Japanese calendar | Shōwa 15 (昭和１５年) |
| Javanese calendar | 1870–1871 |
| Juche calendar | 29 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4273 |
| Minguo calendar | ROC 29 民國29年 |
| Nanakshahi calendar | 472 |
| Thai solar calendar | 2482–2483 |
The year 1940 BC
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