1840 deaths

Italian violinist and composer (1782–1840)

German Romantic landscape painter (1774–1840)

German physician and astronomer (1758-1840)

French mathematician, mechanician and physicist (1781–1840)

King of Prussia from 1797 to 1840

German physician, naturalist, physiologist, and anthropologist (1752 – 1840)

Emperor of Japan from 1780 to 1817

English satirical novelist, diarist, playwright (1752-1840)

1st Prince of Canino and Musignano (1775–1840)

French philosopher (1754-1840)

Paraguayan lawyer, politician and dictator (1766-1840)

Marshal of France (1765-1840)

French naturalist (1783-1840)

French chess player

Colombian military and political leader (1792-1840)

Irish zoologist and politician (1785–1840)

English landowner and lesbian diarist (1791–1840)

Belgian painter and botanist (1759–1840)

Member of the British Royal Family (1770-1840)

German architect (1778–1840)

Jacobite pretender to the British throne (1792-1840)

German scholar of classical Greek studies (1797–1840)

German writer

sixth child and second daughter of King George III and Queen Charlotte

English man of fashion (1778–1840)

Dingane KaSenzangakhona Zulu (–29 January 1840), commonly referred to as Dingane, Dingarn or Dingaan, was a Zulu prince who became king of the Zulu Kingdom in 1828, after assassinating his half-brother Shaka Zulu. He set up his royal capital, uMgungundlovu, translated to "Place of the Elephant" or "elephant swallower". He also constructed one of numerous military encampments, or kraals, in the eMakhosini Valley just south of the White Umfolozi River, on the slope of Lion Hill (Singonyama).

Austrian astronomer (1781-1840)

British scholar, orientalist and antiquary (1799–1840)

French psychiatrist (1772-1840)

German botanist, physician and naturalist (1804-1840)

American politician (1757–1840)

Swiss mathematician (1750-1840)

French priest and Catholic saint

Spanish botanist (1754-1840)

Princess of Denmark (1784-1840)

German jurist and musician

British politician (1792-1840)

German painter (1798–1840)

Crown Princess of Prussia

British surgeon

Prime Minister of Greece (1791–1840)

American politician (1777-1840)

German chess player (1815-1840)

2nd ruler of the Sikh Empire

French general (1765-1840)

Austrian microscopist and botanical artist (1758-1840)

British naval officer (1764-1840)

Austrian singer

French statesman and historian of the French Revolution and Empire (1761-1840)

Guatemalan Mesoamericanist (1802–1839)

Russian poet and philosopher (1813–1840)

French Vincentian missionary, martyr and saint (1802-1840)

German entomologist

Turkmen poet

French chemist (1780-1840)

British artist based in Edinburgh (1758-1840)

British businessman (1790-1840)

Sikh emperor

Russian composer

American politician (1773-1840)