| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1142 by topic |
|---|
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Art and literature |
| 1142 in poetry |
| Gregorian calendar | 1142 MCXLII |
| Ab urbe condita | 1895 |
| Armenian calendar | 591 ԹՎ ՇՂԱ |
| Assyrian calendar | 5892 |
| Balinese saka calendar | 1063–1064 |
| Bengali calendar | 549 |
| Berber calendar | 2092 |
| English Regnal year | 7 Ste. 1 – 8 Ste. 1 |
| Buddhist calendar | 1686 |
| Burmese calendar | 504 |
| Byzantine calendar | 6650–6651 |
| Chinese calendar | 辛酉年 (Metal Rooster) 3839 or 3632 — to — 壬戌年 (Water Dog) 3840 or 3633 |
| Coptic calendar | 858–859 |
| Discordian calendar | 2308 |
| Ethiopian calendar | 1134–1135 |
| Hebrew calendar | 4902–4903 |
| Hindu calendars | |
| - Vikram Samvat | 1198–1199 |
| - Shaka Samvat | 1063–1064 |
| - Kali Yuga | 4242–4243 |
| Holocene calendar | 11142 |
| Igbo calendar | 142–143 |
| Iranian calendar | 520–521 |
| Islamic calendar | 536–537 |
| Japanese calendar | Eiji (era) 2 / Kōji 1 (康治元年) |
| Javanese calendar | 1048–1049 |
| Julian calendar | 1142 MCXLII |
| Korean calendar | 3475 |
| Minguo calendar | 770 before ROC 民前770年 |
| Nanakshahi calendar | −326 |
| Seleucid era | 1453/1454 AG |
| Thai solar calendar | 1684–1685 |
| Tibetan calendar | 阴金鸡年 (female Iron-Rooster) 1268 or 887 or 115 — to — 阳水狗年 (male Water-Dog) 1269 or 888 or 116 |
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Year 1142 (MCXLII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.