| Centuries: | 9th century - 10th century - 11th century |
| Decades: | 910s 920s 930s - 940s - 950s 960s 970s |
| Years: | 939 940 941 - 942 - 943 944 945 |
| 942 by topic | |
| Politics | |
| State leaders - Sovereign states | |
| Birth and death categories | |
| Births - Deaths | |
| Establishment and disestablishment categories | |
| Establishments - Disestablishments | |
| Gregorian calendar | 942 CMXLII |
| Ab urbe condita | 1695 |
| Armenian calendar | 391 ԹՎ ՅՂԱ |
| Bahá'í calendar | -902 – -901 |
| Berber calendar | 1892 |
| Buddhist calendar | 1486 |
| Burmese calendar | 304 |
| Chinese calendar | 3578/3638-12-12 (辛丑年十二月十二日) — to —
3579/3639-11-21(壬寅年十一月廿一日) |
| Coptic calendar | 658 – 659 |
| Ethiopian calendar | 934 – 935 |
| Hebrew calendar | 4702 – 4703 |
| Hindu calendars | |
| - Vikram Samvat | 997 – 998 |
| - Shaka Samvat | 864 – 865 |
| - Kali Yuga | 4043 – 4044 |
| Holocene calendar | 10942 |
| Iranian calendar | 320 – 321 |
| Islamic calendar | 330 – 331 |
| Japanese calendar | |
| Korean calendar | 3275 |
| Thai solar calendar | 1485 |