| Millennium: | 2nd millennium | 
|---|---|
| Centuries: | |
| Decades: | |
| Years: | 
| 1126 by topic | |
| Leaders | |
| Political entities - State leaders - Religious leaders | |
| Birth and death categories | |
| Births – Deaths | |
| Establishments and disestablishments categories | |
| Establishments – Disestablishments | |
| Art and literature | |
| 1126 in poetry | |
| Gregorian calendar | 1126 MCXXVI | 
| Ab urbe condita | 1879 | 
| Armenian calendar | 575 ԹՎ ՇՀԵ | 
| Assyrian calendar | 5876 | 
| Bengali calendar | 533 | 
| Berber calendar | 2076 | 
| English Regnal year | 26 Hen. 1 – 27 Hen. 1 | 
| Buddhist calendar | 1670 | 
| Burmese calendar | 488 | 
| Byzantine calendar | 6634–6635 | 
| Chinese calendar | 乙巳年 (Wood Snake) 3822 or 3762 — to — 丙午年 (Fire Horse) 3823 or 3763 | 
| Coptic calendar | 842–843 | 
| Discordian calendar | 2292 | 
| Ethiopian calendar | 1118–1119 | 
| Hebrew calendar | 4886–4887 | 
| Hindu calendars | |
| - Vikram Samvat | 1182–1183 | 
| - Shaka Samvat | 1047–1048 | 
| - Kali Yuga | 4226–4227 | 
| Holocene calendar | 11126 | 
| Igbo calendar | 126–127 | 
| Iranian calendar | 504–505 | 
| Islamic calendar | 519–520 | 
| Japanese calendar | Tenji 3 / Daiji 1 (大治元年) | 
| Javanese calendar | 1031–1032 | 
| Julian calendar | 1126 MCXXVI | 
| Korean calendar | 3459 | 
| Minguo calendar | 786 before ROC 民前786年 | 
| Nanakshahi calendar | −342 | 
| Seleucid era | 1437/1438 AG | 
| Thai solar calendar | 1668–1669 | 
Year 1126 (MCXXVI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.