- Jan 7 Infanta Carlota Joaquina, daughter of Charles IV of Spain and wife of John VI of Portugal, dies at 53
- Jan 7 Thomas Lawrence, English portrait painter, dies at 60
- Jan 14 Johann Georg Repsold, German scientific instrument maker, astronomer, and fireman, dies fighting a fire at 59
- Jan 17 W Waiblinger, writer, dies
- Jan 19 Wenzel Thomas Matiegka, Czech guitarist, and composer, dies at 56
- Jan 20 Michal Bogdanowicz, Polish composer, dies at 49
- Feb 7 Marcus Antonio da Fonseca Portugal, Portuguese composer, dies at 67
- Feb 17 Marcos Portugal [Marcos Antonio da Fonseca Portugal], Portuguese-Brazilian opera, sacred music, and national anthem composer (Portugal - "Hymno Patriótico", 1809; Brazil - "Hino da Independência", 1822), dies at 67
- Feb 18 Charles de Merode, Earl of Merode, Mayor of Brussels and French Senator, dies at 67
- Mar 2 Samuel Thomas von Sömmering, German physician (b. 1755)
- Mar 17 Laurent, 1st Marquis of Gouvion Saint-Cyr, French marshal, dies at 65
- Mar 21 Johann Rudolf Wyss, Swiss folkorist and writer (Swiss Family Robinson), dies at 48
- Apr 1 Carl Borromaus Neuner, German composer, dies at 51
- Apr 18 José Maurício Nunes Garcia, Brazilian classical composer (Master of Music at the Royal Chapel), dies at 63
- Apr 22 Knud Lyne Rahbek, Danish literary historian, dies at 69
- May 16 Joseph Fourier, French mathematician (mathematical theory of heat conduction) and Egyptologist, dies at 62
- Jun 1 Sahajanand Swami, believed to be an incarnation of god by his followers, leaves his mortal body. (b. 1781)
- Jun 4 Antonio José de Sucre, Great Marshall of Ayacucho (b. 1795)
- Jun 25 Ephraim McDowell, American physician and surgeon (pioneered abdominal surgery), dies at 58
- Jun 26 George IV, King of the United Kingdom of Great Britain and Ireland and King of Hanover (1820-30), dies of upper gastrointestinal bleeding resulting from the rupture of a blood vessel in his stomach at 67
- Jun 28 David Walker, African-American abolitionist (Appeal to Colored Citizens), dies at 33
- Jul 14 Anthony van Haersolte, Dutch politician and member of Executing Regime, dies at 73
- Aug 3 Charles Frederick Horn, German-English composer, arranger, and organist, dies at 68
- Aug 12 Franz de Paula Roser, Austrian composer and conductor, dies at 50
- Aug 27 Louis Henri, Prince of Condé, commits suicide at 74
- Sep 15 William Huskisson, Briton and the first rail fatality (b. 1770)
- Sep 18 William Hazlitt, English critic and essayist, dies at 52
- Sep 19 Stanislas Champein, French composer, dies at 76
- Sep 23 Elizabeth Kortright Monroe, First Lady of the United States (1817-25) as the wife of the fifth President James Monroe, dies at 62
- Oct 4 Ludwig Yorck von Wartenburg, Prussian Generalfeldmarschall, dies at 71
- Oct 18 Peter I Petrovic Njegos, bishop (Montenegro), dies
- Nov 4 Frederic de Merode, Belgian revolutionary, dies in battle at 37
- Nov 8 Francis I, King of the Two Sicilies (1825-30), dies at 53
- Nov 21 Karoly Kisfaludy, Hungarian pioneering dramatist (A Tat rok Magyarorsz gon), dies of tuberculosis at 42
- Nov 25 Pierre Rode, French composer, dies at 56
- Nov 30 Pius VIII [Francesco Saverio Castiglioni], Italian 253rd Pope (1829-30), dies at 69
- Dec 8 H Benjamin Constant, French politician/writer, dies at 63
- Dec 9 Heinrich Christian Friedrich Schumacher, Danish surgeon, botanist and professor of anatomy (research work in malacology), dies at 73
Simón Bolívar (1783-1830)
Dec 17 South American revolutionary and president (Colombia), dies at 47 in Santa Marta, Colombia
- Dec 28 Adrien-Joseph van Helmont, Flemish composer, dies at 83
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide