1125
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1125 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1125 in poetry | 
| Gregorian calendar | 1125 MCXXV | 
| Ab urbe condita | 1878 | 
| Armenian calendar | 574 ԹՎ ՇՀԴ | 
| Assyrian calendar | 5875 | 
| Balinese saka calendar | 1046–1047 | 
| Bengali calendar | 531–532 | 
| Berber calendar | 2075 | 
| English Regnal year | 25 Hen. 1 – 26 Hen. 1 | 
| Buddhist calendar | 1669 | 
| Burmese calendar | 487 | 
| Byzantine calendar | 6633–6634 | 
| Chinese calendar | 甲辰年 (Wood Dragon) 3822 or 3615 — to — 乙巳年 (Wood Snake) 3823 or 3616 | 
| Coptic calendar | 841–842 | 
| Discordian calendar | 2291 | 
| Ethiopian calendar | 1117–1118 | 
| Hebrew calendar | 4885–4886 | 
| Hindu calendars | |
| - Vikram Samvat | 1181–1182 | 
| - Shaka Samvat | 1046–1047 | 
| - Kali Yuga | 4225–4226 | 
| Holocene calendar | 11125 | 
| Igbo calendar | 125–126 | 
| Iranian calendar | 503–504 | 
| Islamic calendar | 518–519 | 
| Japanese calendar | Tenji 2 (天治2年) | 
| Javanese calendar | 1030–1031 | 
| Julian calendar | 1125 MCXXV | 
| Korean calendar | 3458 | 
| Minguo calendar | 787 before ROC 民前787年 | 
| Nanakshahi calendar | −343 | 
| Seleucid era | 1436/1437 AG | 
| Thai solar calendar | 1667–1668 | 
| Tibetan calendar | 阳木龙年 (male Wood-Dragon) 1251 or 870 or 98 — to — 阴木蛇年 (female Wood-Snake) 1252 or 871 or 99 | 
Year 1125 (MCXXV) was a common year starting on Thursday of the Julian calendar.