- Jan 23 Armand-Gaston Camus becomes chairman of the Council of 500
- Feb 1 The capital of Upper Canada is moved from Newark to York
- Feb 29 Jay's Treaty proclaimed, settles some differences with England
- Mar 1 1st National Meeting in the Hague
Napoléon Appointed Commander in Chief
Mar 2 Napoléon Bonaparte is appointed Commander-in-Chief of the French Army in Italy
- Mar 28 Bethel African Methodist Church of Philadelphia is 1st US-African church
Heptadecagon Construction
Mar 30 Carl Friedrich Gauss, German mathematician, discovers the construction of the heptadecagon
Egmont
Mar 31 Johann Wolfgang von Goethe's dramatic play "Egmont" premieres in Weimar
- Apr 8 Carl Friedrich Gauss, German mathematician, proves the quadratic reciprocity law (the ability to determine the solvability of any quadratic equation in modular arithmetic)
- Apr 13 Battle of Millesimo, Italy: Napoleon's forces defeat allied armies of Austria and of the Kingdom of Sardinia-Piedmont.
- Apr 13 First elephant arrives in US from India
- Apr 21 Napoleon and the French defeat the Piedmontese at Battle of Mondovi
- Apr 28 Armistice of Cherasco between Sardinia and Napoleon Bonaparte at Cherasco, Piedmont gives France territories of Piedmont, Savoy and Nice
- May 10 French government arrest 10 utopists
- May 10 Napoleon defeats Austria in Battle of Lodi Bridge
- May 10 Riot after disagreement of patriotic demand in Amsterdam
Jenner's Vaccine for Smallpox
May 14 English country doctor Edward Jenner administers his revolutionary cowpox-based vaccine for smallpox, in Berkeley, Gloucestershire
- May 15 First Coalition: Napoleon enters Milan in triumph with French troops
- May 15 France & Sardinia sign Peace treaty of Paris
- May 16 Lombardian Republic forms
- May 19 Game protection law restricts encroachment on Indian hunting grounds
- May 26 French garrison of Fort Charlotte on island of St Lucia surrenders to British forces, 2780 mostly black prisoners of war board ships to England [1]
- May 27 James S. McLean granted a US patent for his improvements to the piano
- Jun 1 Last of Britain's troops withdraws from USA
- Jun 1 Tennessee admitted as 16th US state
- Jul 4 1st Independence Day celebration is held
- Jul 8 US State Department issues 1st US passport
- Jul 10 Carl Friedrich Gauss discovers that every positive integer is representable as a sum of at most three triangular numbers
- Jul 22 Cleveland, Ohio, founded by General Moses Cleaveland. Originally called 'Cleaveland', the public adopted the current name after a newspaper editor noticed the name was too long to fit on the page.
- Aug 8 Boston African Society establishes with 44 members
- Aug 17 British defeat Batavian navy in Saldanha Bay, South Africa
- Aug 19 Spain & France sign anti-British alliance
- Aug 23 African Methodist Episcopal Church incorporated
- Sep 2 Jews of the Netherlands are emancipated
- Sep 5 General Salicetti orders equal rights for Jews of Bologna, Italy
- Sep 8 Battle of Bassano: Napoleon Bonaparte's French army defeat Austrian force during French Revolutionary Wars
Washington's Farewell Address
Sep 19 George Washington's farewell address as US President is published
- Oct 5 Spain declares war on England
John Adams Elected
Nov 3 John Adams elected as 2nd president of the United States of America
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists