1820 deaths

Romanian philologist, historian and writer

American politician (1761-1820)

composer

Scottish chemist, geologist, industrialist and inventor

Superior General of the Society of Jesus

Spanish explorer (1750-1820)

Italian cardinal (1744-1820)

Italian Orientalist (1752-1821)

Polish writer

Czech composer and violoncellist (1749-1820)

German diplomat, historian

New Spain botanist (1757-1820)

Italian writer and librettist (1761-1820)

German scientist

American fur trader (1772–1820)

German-Swiss classical scholar

German architect (1782-1820)

Italian cardinal and diplomat (1756-1820)

Royal Navy admiral (1762-1820)

German historian and lexicographer (1743-1820)

Spanish historian

Japanese artist (1739-1820)

American lawyer and politician (1756-1820)

Spanish politician

French architectural draughtsman, antiquary and artist (1721-1820)

Scottish Earl

Prince Royal, the heir apparent to the throne of the Kingdom of Haiti (1804–1820)

Haitian politician

Scottish anatomist and surgeon (1763–1820)

French politician. lawyer and philanthropist (1733-1820)

Swedish businessman and diplomat

Sixth Duke of Arenberg (1750-1820)

French Navy officer and admiral, later Minister of the Navy (1761-1820)

British astronomer

Japanese painter, musician and poet (1745-1820)

French zoologist (1766-1820)

German linguist

Austrian archbishop

Austrian composer

German poet

Baltic German military personnel (1746-1820)

Swedish admiral

French newspaper editor

Louis-Benoît Zamor ( – 7 February 1820) was an Bengali-born slave and revolutionary who spent most of his life in France. Born in Chittagong, Bengal in , he was captured and sold into slavery and brought to France, possibly by a British sea captain. He became a servant of Madame du Barry, though after the French Revolution began in 1789 Zamor became a fervent supporter of the revolution and supplied information which led to du Barry's execution in 1793. Zamor disappears from historical records until 1815, when he was recorded as working as a teacher in Paris until his death in 1820.

German literary critic

Czech anatomist and doctor (1749-1820)

French saddler

French playwright

American physician

Spanish artist (1734–1820)

Ashkenazi Polish rabbi

Dutch painter (1755-1820)

Early American poet (1795–1820)

German artist (1780-1820)

American politician (1744-1820)

American politician (1772-1820)

coiffeur, theatre entrepreneur

Czech hornist and composer

Spanish Jesuit mathematician (1740-1820)

British botanist (1781-1820)