- Jan 3 Louis-Gabriel Suchet, French nobleman (Duke of Albufera), and military commander (Marshal of the Empire), dies at 55
- Jan 17 Juan Crisóstomo Arriaga, Spanish composer (b. 1806)
- Feb 2 Jean Anthelme Brillat-Savarin, French lawyer and gastronome (wrote 1st book of gastronomy - The Physiology of Taste), dies at 70 [1]
- Feb 25 Peter Ludwig von der Pahlen, Baltic German courtier, general and military governor of St Petersburg, dies at 80
- Mar 1 Friedrich Weinbrenner, German architect, dies at 59
- Mar 10 John VI "the Clement", King of Portugal (1816-26), dies at 56
- Mar 11 Gervais-François Couperin, French organist and composer, dies at 66
- Mar 27 Jakob Haibel, Austrian composer, dies at 63
- Apr 3 Reginald Heber, English bishop & hymn writer, dies at 42
- Apr 13 Franz Danzi, German composer and cellist, dies at 62
- May 10 Giuseppe Sigismondo, Italian historian and composer, dies at 86
- May 13 Christian Kramp, French mathematician known for his work with factorials, dies at 65
- May 24 Friedrich Fesca, German violinist and composer, dies of tuberculosis at 37
- May 25 Christian Friedrich Ruppe, German-Dutch composer, brother of Friedrich Christian Ruppe, dies at 72
- Jun 1 Jean Frédéric Oberlin, Alsatian pastor (b. 1740)
- Jun 3 Nikolai Mikhailovich Karamzin, Russian writer (b. 1766)
Carl Maria von Weber (1786-1826)
Jun 5 German pianist, romantic composer (Der Freischutz; Oberon), and lithographer, dies of tuberculosis at 39
- Jun 7 Joseph von Fraunhofer, German physicist and optical lens manufacturer (studied Sun's spectrum, invented the spectroscope), dies poisoned by the heavy metal vapors used in his work at 39
John Adams (1735-1826)
Jul 4 Second US President (1797-1801), Vice President (1789-97) and Founding Father, dies at 90
Thomas Jefferson (1743-1826)
Jul 4 3rd President of the United States (1801-09), dies at 83
Stamford Raffles (1781-1826)
Jul 5 British statesman and founder of Singapore, dies at 44 of apoplexy
- Jul 7 Friedrich Dülon, German flautist and composer, dies at 56
- Jul 8 Luther Martin, American statesman (b. 1748)
- Jul 11 Karl Bernhard Wessely, German composer (Sulamith und Eusebia), dies at 57
- Jul 17 Joseph Graetz, German organist, composer, and music educator, dies at 65
- Jul 22 Giuseppe Piazzi, Italian astronomer (found 1st asteroid-Ceres), dies at 80
- Jul 24 Jacob Kimball, American pioneering composer and musician, dies at 65
- Jul 25 Kondraty Fyodorovich Ryleyev, Russian poet and revolutionary (b. 1795)
- Jul 25 Pavel Ivanovich Pestel, Russian officer, hanged at 33 [OS Jul 13]
- Jul 26 Friedrich Wilhelm Weis, German physician and composer, dies at 82
- Aug 13 René Laënnec, French physician who invented the stethoscope, dies of tuberculosis at 46
- Aug 30 Theodor Zwetler, Austrian composer, dies at 67
- Sep 22 Johann Peter Hebel, German writer (Allemannische Gedichte), dies at 66
- Sep 25 Giovanni Battista Brocchi, Italian naturalist and geologist (Conchiologia fossile subappennina), dies of suspected of dysentery in Khartoum at 54
- Sep 26 Alexander Gordon Laing, Scottish explorer (1st European to reach Timbuktu), murdered in or near Timbuktu at 31
- Oct 3 Jens Baggesen, Danish writer and linguist (Labyrinth), dies at 62
Philippe Pinel (1745-1826)
Oct 25 French physician and father of modern psychiatry who developed a more humane approach to the custody and care of psychiatric patients, dies at 81
- Nov 17 Louise Reichardt, German composer of lieder and scared songs, educator, and choral conductor, dies at 47
- Nov 22 Pavel Lambert Mašek, Czech composer, dies at 65
- Nov 23 Johann Bode, German astronomer (Titius–Bode Law), dies at 79
- Dec 7 John Flaxman, English Neoclassical sculptor (tombs at St Paul's Cathedral), dies at 71
- Dec 10 Benedikt Schack, Bohemian-Austrian singer, composer, and friend of Wolfgang Mozart (originated role of Tamino in Die Zauberflöte), dies at 68
- Dec 15 William Browser, American slave, executed in NYC for participating in the murder of two ship's officers during a slave revolt on board the Decatur
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide