1802: Year

• March 16 – West Point is established.
• March 25/27 – Treaty of Amiens between France and United Kingdom ends the War of the Second Coalition.
• March 28 – H. W. Olbers discovers the asteroid Pallas.
• May 19 – Napoleon Bonaparte establishes the French légion d'honneur (Legion of Honour).
• June 8 – Haitian revolutionary Toussaint Louverture is seized by French troops and sent to Fort de Joux for prison.
• July 4 – At West Point, New York the United States Military Academy opens.
• August 2 – In a plebiscite Napoleon Bonaparte is confirmed as consul for life.
• September 11 – The Italian region of Piedmont becomes a part of Napoleonic France.
• October 2 – War ends between Sweden and Tripoli. The United States also negotiates peace, but war continues over the size of compensation.
• July – Eleuthère Irénée du Pont founds E.I. du Pont de Nemours and Company, the modern DuPont Company.
• October – French army enters Switzerland.
• Marie Tussaud opens her famous wax museum in London, having been commissioned during the Reign of Terror to make death masks of the victims.
• Treviranus uses the term biology for the first time.
• Thomas Wedgwood produces the world's first photograph, but has no means of fixing the image, which quickly fades.
• William Symington builds the first successful steamship, the Charlotte Dundas.
• Ludwig van Beethoven performs the Moonlight Sonata for the first time.
• William Wordsworth publishes the poem "Westminster Bridge."
• The estimated world population reaches 1 billion people.

Ongoing events

• French Revolutionary Wars (1792-1802)
• Napoleonic Wars (1799-1815)

for more information, see Category:1802 births.

for more information, see Category:1802 deaths.