| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 1124 MCXXIV |
| Ab urbe condita | 1877 |
| Armenian calendar | 573 ԹՎ ՇՀԳ |
| Assyrian calendar | 5874 |
| Balinese saka calendar | 1045–1046 |
| Bengali calendar | 531 |
| Berber calendar | 2074 |
| English Regnal year | 24 Hen. 1 – 25 Hen. 1 |
| Buddhist calendar | 1668 |
| Burmese calendar | 486 |
| Byzantine calendar | 6632–6633 |
| Chinese calendar | 癸卯年 (Water Rabbit) 3821 or 3614 — to — 甲辰年 (Wood Dragon) 3822 or 3615 |
| Coptic calendar | 840–841 |
| Discordian calendar | 2290 |
| Ethiopian calendar | 1116–1117 |
| Hebrew calendar | 4884–4885 |
| Hindu calendars | |
| - Vikram Samvat | 1180–1181 |
| - Shaka Samvat | 1045–1046 |
| - Kali Yuga | 4224–4225 |
| Holocene calendar | 11124 |
| Igbo calendar | 124–125 |
| Iranian calendar | 502–503 |
| Islamic calendar | 517–518 |
| Japanese calendar | Hōan 5 / Tenji 1 (天治元年) |
| Javanese calendar | 1029–1030 |
| Julian calendar | 1124 MCXXIV |
| Korean calendar | 3457 |
| Minguo calendar | 788 before ROC 民前788年 |
| Nanakshahi calendar | −344 |
| Seleucid era | 1435/1436 AG |
| Thai solar calendar | 1666–1667 |
| Tibetan calendar | 阴水兔年 (female Water-Rabbit) 1250 or 869 or 97 — to — 阳木龙年 (male Wood-Dragon) 1251 or 870 or 98 |
Year 1124 (MCXXIV) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar, the 1124th year of the Common Era (CE) and Anno Domini (AD) designations, the 124th year of the 2nd millennium, the 24th year of the 12th century, and the 5th year of the 1120s decade.