| Years |
|---|
| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| 1089 by topic |
|---|
| Arts, history, and science |
| Countries |
|
|
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1089 MLXXXIX |
| Ab urbe condita | 1842 |
| Armenian calendar | 538 ԹՎ ՇԼԸ |
| Assyrian calendar | 5839 |
| Balinese saka calendar | 1010–1011 |
| Bengali calendar | 496 |
| Berber calendar | 2039 |
| English Regnal year | 2 Will. 2 – 3 Will. 2 |
| Buddhist calendar | 1633 |
| Burmese calendar | 451 |
| Byzantine calendar | 6597–6598 |
| Chinese calendar | 戊辰年 (Earth Dragon) 3785 or 3725 — to — 己巳年 (Earth Snake) 3786 or 3726 |
| Coptic calendar | 805–806 |
| Discordian calendar | 2255 |
| Ethiopian calendar | 1081–1082 |
| Hebrew calendar | 4849–4850 |
| Hindu calendars | |
| - Vikram Samvat | 1145–1146 |
| - Shaka Samvat | 1010–1011 |
| - Kali Yuga | 4189–4190 |
| Holocene calendar | 11089 |
| Igbo calendar | 89–90 |
| Iranian calendar | 467–468 |
| Islamic calendar | 481–482 |
| Japanese calendar | Kanji 3 (寛治３年) |
| Javanese calendar | 993–994 |
| Julian calendar | 1089 MLXXXIX |
| Korean calendar | 3422 |
| Minguo calendar | 823 before ROC 民前823年 |
| Nanakshahi calendar | −379 |
| Seleucid era | 1400/1401 AG |
| Thai solar calendar | 1631–1632 |
| Tibetan calendar | ས་ཕོ་འབྲུག་ལོ་ (male Earth-Dragon) 1215 or 834 or 62 — to — ས་མོ་སྦྲུལ་ལོ་ (female Earth-Snake) 1216 or 835 or 63 |
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1089 (MLXXXIX) was a common year starting on Monday of the Julian calendar, the 1089th year of the Common Era (CE) and Anno Domini (AD) designations, the 89th year of the 2nd millennium, the 89th year of the 11th century, and the 10th and last year of the 1080s decade. As of the start of 1089, the Gregorian calendar was 6 days ahead of the Julian calendar, which was the dominant calendar of the time.