| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1669 by topic |
|---|
| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Works category |
| Gregorian calendar | 1669 MDCLXIX |
| Ab urbe condita | 2422 |
| Armenian calendar | 1118 ԹՎ ՌՃԺԸ |
| Assyrian calendar | 6419 |
| Balinese saka calendar | 1590–1591 |
| Bengali calendar | 1076 |
| Berber calendar | 2619 |
| English Regnal year | 20 Cha. 2 – 21 Cha. 2 |
| Buddhist calendar | 2213 |
| Burmese calendar | 1031 |
| Byzantine calendar | 7177–7178 |
| Chinese calendar | 戊申年 (Earth Monkey) 4366 or 4159 — to — 己酉年 (Earth Rooster) 4367 or 4160 |
| Coptic calendar | 1385–1386 |
| Discordian calendar | 2835 |
| Ethiopian calendar | 1661–1662 |
| Hebrew calendar | 5429–5430 |
| Hindu calendars | |
| - Vikram Samvat | 1725–1726 |
| - Shaka Samvat | 1590–1591 |
| - Kali Yuga | 4769–4770 |
| Holocene calendar | 11669 |
| Igbo calendar | 669–670 |
| Iranian calendar | 1047–1048 |
| Islamic calendar | 1079–1080 |
| Japanese calendar | Kanbun 9 (寛文９年) |
| Javanese calendar | 1591–1592 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 4002 |
| Minguo calendar | 243 before ROC 民前243年 |
| Nanakshahi calendar | 201 |
| Thai solar calendar | 2211–2212 |
| Tibetan calendar | 阳土猴年 (male Earth-Monkey) 1795 or 1414 or 642 — to — 阴土鸡年 (female Earth-Rooster) 1796 or 1415 or 643 |
1669 (MDCLXIX) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1669th year of the Common Era (CE) and Anno Domini (AD) designations, the 669th year of the 2nd millennium, the 69th year of the 17th century, and the 10th and last year of the 1660s decade. As of the start of 1669, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.