| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1123 by topic |
|---|
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Art and literature |
| 1123 in poetry |
| Gregorian calendar | 1123 MCXXIII |
| Ab urbe condita | 1876 |
| Armenian calendar | 572 ԹՎ ՇՀԲ |
| Assyrian calendar | 5873 |
| Balinese saka calendar | 1044–1045 |
| Bengali calendar | 530 |
| Berber calendar | 2073 |
| English Regnal year | 23 Hen. 1 – 24 Hen. 1 |
| Buddhist calendar | 1667 |
| Burmese calendar | 485 |
| Byzantine calendar | 6631–6632 |
| Chinese calendar | 壬寅年 (Water Tiger) 3820 or 3613 — to — 癸卯年 (Water Rabbit) 3821 or 3614 |
| Coptic calendar | 839–840 |
| Discordian calendar | 2289 |
| Ethiopian calendar | 1115–1116 |
| Hebrew calendar | 4883–4884 |
| Hindu calendars | |
| - Vikram Samvat | 1179–1180 |
| - Shaka Samvat | 1044–1045 |
| - Kali Yuga | 4223–4224 |
| Holocene calendar | 11123 |
| Igbo calendar | 123–124 |
| Iranian calendar | 501–502 |
| Islamic calendar | 516–517 |
| Japanese calendar | Hōan 4 (保安４年) |
| Javanese calendar | 1028–1029 |
| Julian calendar | 1123 MCXXIII |
| Korean calendar | 3456 |
| Minguo calendar | 789 before ROC 民前789年 |
| Nanakshahi calendar | −345 |
| Seleucid era | 1434/1435 AG |
| Thai solar calendar | 1665–1666 |
| Tibetan calendar | 阳水虎年 (male Water-Tiger) 1249 or 868 or 96 — to — 阴水兔年 (female Water-Rabbit) 1250 or 869 or 97 |
Year 1123 (MCXXIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.