- Jan 10 Victor Emanuel I, king of Sardinia (1802-21), dies at 64
- Jan 24 Ercole Consalvi, Italian Roman Catholic Cardinal, dies at 66
- Jan 26 Théodore Géricault, French painter (The Raft of the Medusa), dies at 32
- Jan 29 Louise of Stolberg-Gedern, Countess of Albany, dies at 71
- Feb 1 Maria Theresia von Paradis, Austrian musician & composer, dies at 64
- Feb 8 Rhijnvis Feith, Dutch mayor/writer (Zwolle, Julia), dies at 71
- Feb 9 Anna Katharina Emmerick, Roman Catholic Augustinian Canoness Regular of Windesheim, Marian visionary, ecstatic and stigmatist, dies at 49
- Feb 20 Bogislav Friedrich Emanuel von Tauentzien, Prussian general of the Napoleonic Wars, dies at 63
- Feb 21 Eugène de Beauharnais, French military officer and stepson of Napoleon Bonaparte (son of Alexandre de Beauharnais and Joséphine Tascher de la Pagerie), dies at 42
- Feb 22 John Davy, English composer, dies at 60
- Mar 3 Giovanni Battista Viotti, Italian violinist and composer, dies at 70
- Mar 9 Jacobus J Cramer, priest of Holland/Zealand/Friesland, dies at 79
- Mar 12 Heinrich Carl Ebell, composer, dies at 48
- Mar 22 Johann Melchior Dreyer, German composer, dies at 76
- Apr 15 Theodorus Frederik van Capellen, Dutch vice-admiral (Algiers), dies at 61
- Apr 18 Edward Jones, Welsh harpist and composer, dies at 72
Lord Byron
Apr 19 Lord Byron [George Gordon Byron], British romantic poet (Childe Harold's Pilgrimage), dies at 36
- Apr 24 Herman Muntinghe, Dutch theologist (History of Mankind), dies at 71
- May 4 Joseph Joubert, French essayist and moralist (b. 1754)
- May 15 Alexander Campbell, composer, dies at 60
- May 26 Capel Lofft, English writer (b. 1751)
- Jun 14 Agustín de Betancourt, Spanish civil engineer (steam engines, hot air balloons), dies at 68
- Jun 16 Charles-François Lebrun, duc de Plaisance, Third Consul of France (b. 1739)
- Jun 18 Ferdinand III, Grand Duke of Tuscany (1790-1801), dies at 55
- Jun 21 Étienne Aignan, French writer and translator, dies at 51
Agustín de Iturbide
Jul 19 Agustín de Iturbide [crowned Agustin I], Mexican army general, politician and the 1st emperor of Mexico is executed by firing squad at 40
Louis XVIII
Sep 16 Louis XVIII SX, Earl of Province, and King of France (1814-24), dies
- Sep 17 Giacomo Tritto, Italian composer, dies at 91
- Oct 27 Joseph Frederick Wallet DesBarres, Swiss-Canadian cartographer and statesman, dies at 102
- Nov 30 Johann Georg Christoph Schetky, German cellist and composer, dies at 87
- Dec 21 James Parkinson, English physician (First description of Parkinson's disease) and political activist, dies at 69
- Dec 25 Barbara Juliane, baroness von Krüdener, Baltic German religious mystic, author, and Pietist Lutheran theologian, dies at 60