| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 19th century – 20th century – 21st century |
| Decades: | 1910s 1920s 1930s – 1940s – 1950s 1960s 1970s |
| Years: | 1940 1941 1942 – 1943 – 1944 1945 1946 |
| Gregorian calendar | 1943 MCMXLIII |
| Ab urbe condita | 2696 |
| Armenian calendar | 1392 ԹՎ ՌՅՂԲ |
| Assyrian calendar | 6693 |
| Bahá'í calendar | 99–100 |
| Balinese saka calendar | 1864–1865 |
| Bengali calendar | 1350 |
| Berber calendar | 2893 |
| British Regnal year | 7 Geo. 6 – 8 Geo. 6 |
| Buddhist calendar | 2487 |
| Burmese calendar | 1305 |
| Byzantine calendar | 7451–7452 |
| Chinese calendar | 壬午年 (Water Horse) 4639 or 4579 — to — 癸未年 (Water Goat) 4640 or 4580 |
| Coptic calendar | 1659–1660 |
| Discordian calendar | 3109 |
| Ethiopian calendar | 1935–1936 |
| Hebrew calendar | 5703–5704 |
| Hindu calendars | |
| - Vikram Samvat | 1999–2000 |
| - Shaka Samvat | 1864–1865 |
| - Kali Yuga | 5043–5044 |
| Holocene calendar | 11943 |
| Igbo calendar | 943–944 |
| Iranian calendar | 1321–1322 |
| Islamic calendar | 1361–1363 |
| Japanese calendar | Shōwa 18 (昭和１８年) |
| Javanese calendar | 1873–1874 |
| Juche calendar | 32 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4276 |
| Minguo calendar | ROC 32 民國32年 |
| Nanakshahi calendar | 475 |
| Thai solar calendar | 2486 |
| Tibetan calendar | 阳水马年 (male Water-Horse) 2069 or 1688 or 916 — to — 阴水羊年 (female Water-Goat) 2070 or 1689 or 917 |
1943 (MCMXLIII) was a common year starting on Friday in the Gregorian calendar, the 1943rd year of the Common Era (CE) and Anno Domini (AD) designations, the 943rd year of the 2nd millennium, the 43rd year of the 20th century, and the 4th year of the 1940s decade