1836 1837 1838 - 1839 - 1840 1841 1842
1800s 1810s 1820s - 1830s - 1840s 1850s 1860s
Events of 1839
- January 9 – The French Academy of Sciences announces the Daguerreotype photography process.
- January 19 – The British East India Company captures Aden.
- January 20 – Battle of Yungay: Chile defeats a Peruvian-Bolivian alliance.
- February 11 – The University of Missouri is established, becoming the first public university west of the Mississippi River.
- February 24 – William Otis receives a patent for the steam shovel.
- March 5 – Longwood University is founded in Farmville, Virginia.
- March 7 – Baltimore City College, the third public high school in the United States, is established in Baltimore, Maryland.
- March 23 – The Boston Morning Post first records the use of "OK" (oll korrect).
- March 26 – The first Henley Royal Regatta is held.
- March 29 – British naturalist Charles Darwin marries his cousin Emma Wedgwood.
- April – Sultan Mahmud II of the Ottoman Empire dies.
- April 9 – The world's first commercial electric telegraph line comes into operation alongside the Great Western Railway line, from Paddington Station to West Drayton.
- April 19 – The Treaty of London establishes Belgium as a kingdom.
- June 22 – Louis Daguerre receives a patent for his camera (commercially available by September at the price of 400 francs).
- July 1 – Slaves aboard the Amistad rebel and capture the ship.
- July 1 – Abd-ul-Mejid (1839–1861) succeeds Mahmud II (1808–1839) as Ottoman Emperor.
- July 23 – First Anglo-Afghan War – Battle of Ghazni: British forces capture the fortress city of Ghazni, Afghanistan.
- August 8 – The Beta Theta Pi fraternity is founded in Oxford, Ohio.
- August 19 – The French government gives Louis Daguerre a pension and gives the daguerreotype "for the whole world".
- August 23 – British forces seize Hong Kong as a base, as it prepares to wage war against Qing China. The ensuing 3-year conflict becomes known as the First Opium War.
- August 31- The First Carlist war (Spain) ends with the Convenio de Vergara, also known as the Abrazo de Vergara ("the embrace in Vergara"; Bergara in Basque), between liberal general Baldomero Espartero, Count of Luchana and Carlist General Rafael Maroto.
- September 9 – In the Great Fire of Mobile, Alabama hundreds of buildings are burned.
- October 3 – In the Kingdom of the Two Sicilies, a railway between Naples and Portici (7.4 km length) is inaugurated by H.M. King Ferdinand II of Bourbon (the first railway in the Italian peninsula).
- October 15 – Abd al-Kader declares a jihad against the French.
- November 4 – The Newport Rising is the last large-scale armed rebellion against authority in mainland Britain.
- November 11 – The Virginia Military Institute is founded in Lexington, Virginia.
- November 17 – Giuseppe Verdi's first opera, Oberto, conte di San Bonifacio, opens in Milan.
- November 25 – A disastrous cyclone slams India with terrible winds and a giant 40-foot storm surge, wiping out the port city of Coringa; 300,000 people die.
- November 27 – In Boston, Massachusetts, the American Statistical Association is founded.