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|Centuries:||16th century – 17th century – 18th century|
|Decades:||1630s 1640s 1650s – 1660s – 1670s 1680s 1690s|
|Years:||1666 1667 1668 – 1669 – 1670 1671 1672|
|1669 by topic:|
|Arts and Science|
|Architecture - Art - Literature - Music - Science|
|Lists of leaders|
|Colonial governors - State leaders|
|Birth and death categories|
|Births - Deaths|
|Establishments and disestablishments categories|
|Establishments - Disestablishments|
|Ab urbe condita||2422|
|English Regnal year||20 Cha. 2 – 21 Cha. 2|
|Chinese calendar||戊申年 (Earth Monkey)
4365 or 4305
— to —
己酉年 (Earth Rooster)
4366 or 4306
|- Vikram Samvat||1725–1726|
|- Shaka Samvat||1591–1592|
|- Kali Yuga||4770–4771|
|Japanese calendar||Kanbun 8
|Julian calendar||Gregorian minus 10 days|
|Minguo calendar||243 before ROC
|Thai solar calendar||2211–2212|
|Wikimedia Commons has media related to 1669.|
1669 (MDCLXIX) was a common year starting on Tuesday (dominical letter F) of the Gregorian calendar and a common year starting on Friday (dominical letter C) 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. Note that the Julian day for 1669 is 10 calendar days difference, which continued to be used from 1582 until the complete conversion of the Gregorian calendar was entirely done in 1929.
- March 11 – Mount Etna erupts, destroying the town of Nicolosi and killing 20,000 people[dubious ].
- May 31 – Samuel Pepys stops writing his diary.
- June 22 – Roux de Marsilly, accused of plotting the assassination of King Louis XIV of France, is publicly tortured in Paris, France.
- June 25 – François de Vendôme, Duke of Beaufort, disappears during a battle in the Siege of Candia in Crete.
- July – The Hanseatic League, after 400 years of operation, holds its last official meeting in Lübeck.
- September 6 – Francesco Morosini, capitano generale of the Venetian forces in the Siege of Candia, surrenders to the Ottomans.
- September 23 – Leopold I, Holy Roman Emperor grants the status and privileges of a university to the Jesuit Academy in Zagreb, the precursor to the modern University of Zagreb.
- Shakushain's Revolt breaks out in Hokkaido, Japan.
- The Mogul Emperor Aurangzeb destroys several Hindu temples (e.g. Kashi Vishwanath and Kesava Deo) and prohibits the whole religion, leading to Hindu rebellion.
- Ottoman units burn the eastern part of Kolárovo.
- The Chinese Kangxi Emperor allows coastal residents deported in 1662 to return home.
- Famine in Bengal kills 3 million people.
- Phosphorus is discovered by Hennig Brand.
- Antonio Stradivari makes his first violin.
- Okaya & Co., Ltd., is founded in Nagoya, Japan.
- The Chinese herbal medicine company Tongrentang, or 同仁堂 in Chinese, is established.
- Blaise Pascal's Pensées posthumously published in Paris.
- Jan Swammerdam publishes his Algemeene Verhandeling van de bloedeloose dierkens, a groundbreaking work in microscopy as well as entomology
- January 20 – Susanna Wesley, mother of the Wesley brothers (d. 1742)
- April 3 – Jean-Baptiste Forqueray, French musician (d. 1722)
- May 26 – Sébastien Vaillant, French botanist (d. 1722)
- July 30 – Eudoxia Lopukhina, first wife of Peter I of Russia (d. 1731)
- August 27 – Anne Marie d'Orléans, Queen of Sicily and Sardinia (d. 1728)
- August 29 – John Anstis, English herald (d. 1744)
- October 19 – Count Wirich Philipp von Daun, Austrian military leader (d. 1741)
- date unknown
- probable – Peter King, 1st Baron King, Lord Chancellor of England (d. 1734)
- February 23 – Leo Aitzema, Dutch historian and statesman (b. 1600)
- March 10 – John Denham, English poet (b. 1615)
- April 23 – Johannes Canuti Lenaeus, archbishop of Uppsala (b. 1573)
- May 14 – Georges de Scudéry, French writer (b. 1601)
- May 16 – Pietro da Cortona, Italian artist (b. 1596)
- June 25 – François de Vendôme, Duke of Beaufort, French soldier (b. 1616)
- September 10 – Henrietta Maria of France, queen of Charles I of England (b. 1609)
- October 4 – Rembrandt Harmenszoon van Rijn, Dutch painter (b. 1606)
- October 14 – Antonio Cesti, Italian composer (b. 1623)
- October 24 – William Prynne, English Puritan leader (b. 1600)
- November 4 – Johannes Cocceius, Dutch theologian (b. 1603)
- December 9 – Pope Clement IX (b. 1600)
- December 16 – Nathaniel Fiennes, English politician (b. c. 1608)