January 22 – Transfer of the Portuguese court to Brazil: John (Dom João), Prince Regent, and the Bragança royal family of Portugal arrive in their colony of Brazil in exile from the French occupation of their home kingdom.
January 26 – Rum Rebellion: On the 20th anniversary of the foundation of the colony of New South Wales, disgruntled military officers of the New South Wales Corps (the Rum Corps) overthrow and imprison Governor William Bligh and seize control of the colony.
February 2 – French troops occupy the Papal States.
February 6 – The ship (from Boston April 5, 1807, hunting seals) rediscovers the Topaz Pitcairn Islands; only one HMS mutineer is still alive, Bounty John Adams, who is using the pseudonym Alexander Smith.
February 11 – In Wilkes-Barre, Pennsylvania, Jesse Fell becomes the first person in the world to burn anthracite coal as residential heating fuel.
March 1 – The slave trade is abolished by the United Kingdom in all of its colonies as the Slave Trade Act 1807 takes effect. This year, the British  Royal Navy establishes the West Africa Squadron on the coast of West Africa to enforce the abolitionist Blockade of Africa.
March 7 – Transfer of the Portuguese court to Brazil: The Portuguese royal court arrives in Rio de Janeiro, making it the centre of the Portuguese Empire.
March 11 – Russian troops occupy Tampere in Finland.
March 13 – Upon the death of Christian VII, Frederick VI becomes king of Denmark. The next day ( March 14), Denmark declares war on Sweden.
March 19 – Charles IV of Spain abdicates in favor of his son, Ferdinand VII. March 22
Russian troops occupy
Turku in Finland.
April 6 – John Jacob Astor incorporates the American Fur Company.
April 16 – Troops under Colonel Carl von Döbeln clash with Russian troops in Pyhäjoki, Finland.
May 2 – Peninsular War: Dos de Mayo Uprising – The people of Madrid rise up against the French troops.
Finnish War: The fortress of Sveaborg is lost by Sweden to Russia. The Madrid rebels who rose on May 2 are executed near the hill of Príncipe Pío ( Goya paints the fight and the execution in 1814).
May 6 – Ferdinand is forced to abdicate as King of Spain by Napoleon. This effectively ends the Anglo-Spanish War (1796–1808) as the United Kingdom allies with Spain and Portugal against the French in the Peninsular War.
June 12 – Finnish War: A landing of Swedish troops at Ala-Lemu, near Turku, fails.
June 15– August 14 – Peninsular War: First siege of Zaragoza – Spanish resist the French.
June 19 – Finnish War: A second landing of Swedish troops at Ala-Lemu fails. June 30
Finnish War – Battle of Turku: The Swedish archipelago fleet defeats the Russians. English chemist
July 5 – Wooster, Ohio, established and named for General Wooster.
July 8 – Joseph Bonaparte approves the Bayonne Statute, a royal charter intended as the basis for his rule as King of Spain, during the Peninsular War.
July 14 – Finnish War: Swedish troops under Colonel Adlercreutz force the Russians to withdraw in Lapua.
July 22 – Battle of Bailén: French General Dupont surrenders to Spanish irregular forces.
August 1 – Peninsular War: British expeditionary force lands near Porto. 
August 10 – Finnish War: Swedish troops under Carl von Döbeln defeat a Russian attack in Kauhajoki.
August 17 – Peninsular War: Battle of Roliça: A British-Portuguese army under Sir Arthur Wellesley defeats an outnumbered French army under General Henri Delaborde.
August 21 – Peninsular War: Battle of Vimeiro: British-Portuguese troops under Wellesley defeat the French under General Jean-Andoche Junot.
September 13 – Finnish War – Battle of Jutas: Swedish forces under Lieutenant General Georg Carl von Döbeln beat the Russians, making von Döbeln a Swedish war hero.
September 27 – The Congress of Erfurt, between the emperors Napoleon I of France and Alexander I of Russia, begins.
October 6 – English chemist Humphry Davy electrochemically isolates potassium from potash. 
October 12 – Banco do Brasil, a major financial group in South America, founded in Rio de Janeiro, Brazil.
November 8 – 1808 United States presidential election: James Madison defeats Charles C. Pinckney, winning 122 electoral votes to Pinckney's 47. Ten of the 17 states choose their electors by popular vote, the rest choose through state legislatures. George Clinton, who is separately elected as vice president, gets six electoral votes for president. 
November 12 – Four large French frigates under the command of Jacques Félix Emmanuel Hamelin, including the Venus, are sent to operate from Isle de France (Mauritius) against British trade in the Indian Ocean, triggering the Mauritius campaign of 1809–11. 
November 15 – Mahmud II (1808– 1839) succeeds Mustafa IV ( 1807–1808), as sultan of the Ottoman Empire.
November 19 – A new truce at Olkijoki ends fighting in Finland, and Swedish troops concede that area to Russia. 
November 23 – Battle of Tudela: French Marshal Lannes defeats a Spanish army.
December 1 – Tsar Alexander I of Russia proclaims Finland a part of Russia. 
December 4 – Napoleon joins his army in Spain. 
December 9 – At 20:34 UTC, Mercury occults Saturn (there are no observation records).
Goethe's is published in full in Faust, Part One (Faust. Eine Tragödie, erster Teil) Tübingen. The
Academy of Fine Arts, Munich is given the title of Royal Academy of Fine Arts by King Maximilian I Joseph of Bavaria. The
January 6 – Joseph Pitty Couthouy, American naval officer (d. 1864)
January 13 – Salmon P. Chase, American politician, Chief Justice of the United States (d. 1873)
January 19 – Lysander Spooner, American philosopher (d. 1887)
January 27 – David Strauss, German theologian (d. 1874)
February 5 – Carl Spitzweg, German painter (d. 1885)
February 26 – Honoré Daumier, French painter, illustrator and sculptor (d. 1879)
March 1 – Edward "Ned" Kendall, American bandleader, instrumentalist (keyed bugle) (d. 1861)
March 17 – Pierre-Louis Dietsch, French composer, conductor (d. 1865)
March 19 – José María Urvina, 5th President of Ecuador (d. 1891)
March 24 – Maria Malibran, née García, Spanish-French operatic singer (d. 1836)
April 13 – Antonio Meucci, Italian-born inventor (d. 1889)
April 20 – Napoleon III, Emperor of the French (d. 1873)
May 6 – William Strong, American politician, Associate Justice of the Supreme Court of the United States (d. 1895)
May 9 – John Scott Russell, Scottish civil engineer (d. 1882)
May 18 – Venancio Flores, general, president of Uruguay (d. 1868)
May 21 – David de Jahacob Lopez Cardozo, Dutch Talmudist (d. 1890)
May 22 – Gérard de Nerval, French writer (d. 1855)
May 30 – Caroline Chisholm, Australian humanitarian (d. 1877)
June 3 – Jefferson Davis, President of the Confederate States (d. 1889)
June 13 – Patrice de MacMahon, Duke of Magenta, French general and politician, first president of the Third Republic (1875-1879) (d. 1893)
June 16 – James Frederick Ferrier, Scottish metaphysical writer and philosopher (d. 1864)
June 17 – Henrik Wergeland, Norwegian author (d. 1845)
July 9 – Alexander William Doniphan, American lawyer, military leader (d. 1887)
July 16 – Daniel Wells Jr., American politician (d. 1902)
September 7 – William Lindley, English sanitary engineer (d. 1900)
September 9 – Wendela Hebbe, Swedish journalist (d. 1899)
September 12 – August von Werder, Prussian general (d. 1887)
September 15 – John Hutton Balfour, Scottish botanist (d. 1884)
September 29 – Henry Bennett, American politician (d. 1868)
October 6 – King Frederick VII of Denmark (d. 1863)
October 20 – Karl Andree, German geographer (d. 1875)
November 1 – John Taylor, American Mormon leader (d. 1887)
November 2 – Jules Amédée Barbey d'Aurevilly, French writer (d. 1889)
November 6 – Friedrich Julius Richelot, German mathematician (d. 1875)
November 29 – William F. Johnston, American politician (d. 1872)
January 4 – Prince Benedetto, Duke of Chablais, Italian general in the French Revolution (b. 1741)
January 5 – Alexei Grigoryevich Orlov, Russian soldier and statesman (b. 1737)
January 8 – William Linn, American President of Queen's College) (b. 1752)
February 12 – Anna Maria Bennett, English novelist (d. 1750)
February 14 – John Dickinson, American lawyer, governor of Delaware and Pennsylvania (b. 1732)
March 13 – King Christian VII of Denmark (b. 1749)
May 18 – Elijah Craig, American minister, inventor (b. 1738)
March 19 – John Redman (physician), American physician (b. 1722)
September 3 – John Montgomery, American delegate to the Continental Congress (b. 1722)
September 5 – John Home, Scottish writer (b. 1722)
September 6 – Louis-Pierre Anquetil, French historian (b. 1723)
September 13 – Saverio Bettinelli, Italian writer (b. 1718)
September 17 – Benjamin Bourne, American politician (b. 1755)
October 1 – Carl Gotthard Langhans, German architect (b. 1732)
October 9 – John Claiborne, American politician (b. 1777)
November 3 – Theophilus Lindsey, English theologian (b. 1723)
November 10 – Guy Carleton, 1st Baron Dorchester, British soldier, governor of Quebec (b. 1724)
Omie Wise, American subject of a murder ballad (b. 1789)
^ Joseph R. Conlin,
The American Past: A Survey of American History (Cengage Learning, 2008)
^ a b
Palmer, Alan; Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 242–243. ISBN . 0-7126-5616-2
^ E. I. Kouri and Jens E. Olesen, eds.
The Cambridge History of Scandinavia: Volume 2, 1520–1870 (Cambridge University Press, 2016)
Antigua and the Antiguans: A Full Account of the Colony and Its Inhabitants (1844, reprinted by Cambridge University Press, 2011) p136
^ Chenoweth, M. (2001), Two major volcanic cooling episodes derived from global marine air temperature, AD 1807–1827, Geophys. Res. Lett., 28(15), 2963–2966,
^ Marco Fontani, Mariagrazia Costa and Mary Virginia Orna,
The Lost Elements: The Periodic Table's Shadow Side (Oxford University Press, 2014)
^ "England's Greatest Chemist, Sir Humphry Davy", by John A. Bowes, in
Young England magazine (Sunday School Union, 1883) p63
^ Thomas Hudson McKee,
The National Conventions and Platforms of All Political Parties (Friedenwald, 1901) p18
^ William James and Frederick Chamier,
The Naval History of Great Britain, Volume 5 (Macmillan and Company, 1902) p53
^ Jón Stefánsson,
Denmark and Sweden: With Iceland and Finland (T.F. Unwin, Ltd., 1916) p332
^ Edward C. Thaden,
Russia's Western Borderlands, 1710-1870 (Princeton University Press, 2014) p85
^ James Harvey Robinson and Charles A. Beard, eds.,
Outlines of European History: From the opening of the eighteenth century to the present day (Ginn and Company, 1912) p214
"The beginning". History of the Rijksmuseum. Rijksmuseum . Retrieved . February 2, 2018