| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1789 by topic |
|---|
| Arts and science |
| Countries |
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1789 MDCCLXXXIX |
| Ab urbe condita | 2542 |
| Armenian calendar | 1238 ԹՎ ՌՄԼԸ |
| Assyrian calendar | 6539 |
| Balinese saka calendar | 1710–1711 |
| Bengali calendar | 1196 |
| Berber calendar | 2739 |
| British Regnal year | 29 Geo. 3 – 30 Geo. 3 |
| Buddhist calendar | 2333 |
| Burmese calendar | 1151 |
| Byzantine calendar | 7297–7298 |
| Chinese calendar | 戊申年 (Earth Monkey) 4486 or 4279 — to — 己酉年 (Earth Rooster) 4487 or 4280 |
| Coptic calendar | 1505–1506 |
| Discordian calendar | 2955 |
| Ethiopian calendar | 1781–1782 |
| Hebrew calendar | 5549–5550 |
| Hindu calendars | |
| - Vikram Samvat | 1845–1846 |
| - Shaka Samvat | 1710–1711 |
| - Kali Yuga | 4889–4890 |
| Holocene calendar | 11789 |
| Igbo calendar | 789–790 |
| Iranian calendar | 1167–1168 |
| Islamic calendar | 1203–1204 |
| Japanese calendar | Tenmei 9 / Kansei 1 (寛政元年) |
| Javanese calendar | 1715–1716 |
| Julian calendar | Gregorian minus 11 days |
| Korean calendar | 4122 |
| Minguo calendar | 123 before ROC 民前123年 |
| Nanakshahi calendar | 321 |
| Thai solar calendar | 2331–2332 |
| Tibetan calendar | 阳土猴年 (male Earth-Monkey) 1915 or 1534 or 762 — to — 阴土鸡年 (female Earth-Rooster) 1916 or 1535 or 763 |
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1789 (MDCCLXXXIX) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1789th year of the Common Era (CE) and Anno Domini (AD) designations, the 789th year of the 2nd millennium, the 89th year of the 18th century, and the 10th and last year of the 1780s decade. As of the start of 1789, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.