| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1140 by topic | |
| Leaders | |
| Political entities - State leaders - Religious leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Art and literature | |
| 1140 in poetry | |
| Gregorian calendar | 1140 MCXL |
| Ab urbe condita | 1893 |
| Armenian calendar | 589 ԹՎ ՇՁԹ |
| Assyrian calendar | 5890 |
| Bengali calendar | 547 |
| Berber calendar | 2090 |
| English Regnal year | 5 Ste. 1 – 6 Ste. 1 |
| Buddhist calendar | 1684 |
| Burmese calendar | 502 |
| Byzantine calendar | 6648–6649 |
| Chinese calendar |
己未年 (Earth Goat) 3836 or 3776 — to — 庚申年 (Metal Monkey) 3837 or 3777 |
| Coptic calendar | 856–857 |
| Discordian calendar | 2306 |
| Ethiopian calendar | 1132–1133 |
| Hebrew calendar | 4900–4901 |
| Hindu calendars | |
| - Vikram Samvat | 1196–1197 |
| - Shaka Samvat | 1061–1062 |
| - Kali Yuga | 4240–4241 |
| Holocene calendar | 11140 |
| Igbo calendar | 140–141 |
| Iranian calendar | 518–519 |
| Islamic calendar | 534–535 |
| Japanese calendar |
Hōen 6 (保延6年) |
| Javanese calendar | 1046–1047 |
| Julian calendar | 1140 MCXL |
| Korean calendar | 3473 |
| Minguo calendar | 772 before ROC 民前772年 |
| Nanakshahi calendar | −328 |
| Seleucid era | 1451/1452 AG |
| Thai solar calendar | 1682–1683 |
Year 1140 (MCXL) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar.