1042
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1042 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Gregorian calendar | 1042 MXLII | 
| Ab urbe condita | 1795 | 
| Armenian calendar | 491 ԹՎ ՆՂԱ | 
| Assyrian calendar | 5792 | 
| Balinese saka calendar | 963–964 | 
| Bengali calendar | 448–449 | 
| Berber calendar | 1992 | 
| English Regnal year | N/A | 
| Buddhist calendar | 1586 | 
| Burmese calendar | 404 | 
| Byzantine calendar | 6550–6551 | 
| Chinese calendar | 辛巳年 (Metal Snake) 3739 or 3532 — to — 壬午年 (Water Horse) 3740 or 3533 | 
| Coptic calendar | 758–759 | 
| Discordian calendar | 2208 | 
| Ethiopian calendar | 1034–1035 | 
| Hebrew calendar | 4802–4803 | 
| Hindu calendars | |
| - Vikram Samvat | 1098–1099 | 
| - Shaka Samvat | 963–964 | 
| - Kali Yuga | 4142–4143 | 
| Holocene calendar | 11042 | 
| Igbo calendar | 42–43 | 
| Iranian calendar | 420–421 | 
| Islamic calendar | 433–434 | 
| Japanese calendar | Chōkyū 3 (長久3年) | 
| Javanese calendar | 945–946 | 
| Julian calendar | 1042 MXLII | 
| Korean calendar | 3375 | 
| Minguo calendar | 870 before ROC 民前870年 | 
| Nanakshahi calendar | −426 | 
| Seleucid era | 1353/1354 AG | 
| Thai solar calendar | 1584–1585 | 
| Tibetan calendar | 阴金蛇年 (female Iron-Snake) 1168 or 787 or 15 — to — 阳水马年 (male Water-Horse) 1169 or 788 or 16 | 
Year 1042 (MXLII) was a common year starting on Friday of the Julian calendar.