1799

1799 (MDCCXCIX) was a common year starting on Tuesday in the Gregorian calendar and a common year starting on Saturday in the Julian calendar.

 Events 
 March 1 – Federalist James Ross becomes President Pro Tempore of the United States Senate.
 March 7 – Napoleon captures Jaffa in Palestine and his troops proceed to kill more than 2,000 Albanian captives.
 March 29 – New York passes a law aimed at gradually abolishing slavery in the state.
 July 7 – Ranjit Singh's men had taken their positions outside Lahore.
 July 15 – In the Egyptian port city of Rosetta, French Captain Pierre Bouchard finds the Rosetta Stone.
 July 25 – At Aboukir in Egypt, Napoleon I of France defeats 10,000 Ottoman Mamluk troops under Mustafa Pasha.
 November 9 – Napoleon overthrows the French Directory.
 December – Napoleon becomes First Consul.
 The Dutch East India Company is dissolved.
 The Place Royale in Paris is renamed Place des Vosges when the Department of Vosges becomes the first to pay new Revolutionary taxes.
 The American System of manufacturing is invented.
Deaths

December 14 - George Washington, 67, first President of the United States, throat infection (b. 1732)
April 17 - Edward Williams Clay, American artist (d. 1857)

 August 29 – Pope Pius VI, Roman Catholic pope during the French revolution. (b. 1717)