Editing 1799 (section)

===July–December===
[[File:Jacques Étienne Montgolfier.jpg|thumb|110px|[[Jacques-Étienne Montgolfier]]]]
[[File:Gilbert Stuart Williamstown Portrait of George Washington.jpg|thumb|110px|[[George Washington]]]]
* [[July 7]] – [[William Curtis]], English botanist, entomologist (b. 1746)
* [[August 2]] – [[Montgolfier brothers|Jacques Étienne Montgolfier]], French inventor of the hot-air balloon, balloonist (b. 1744)
* [[August 4]] – [[John Bacon (sculptor, born 1740)|John Bacon]], British sculptor (b. 1740)
* [[August 5]] – [[Richard Howe]], British admiral (b. 1726)
* [[August 15]] – [[Barthélemy Catherine Joubert]], French general (b. 1769)
* [[August 29]] – [[Pope Pius VI]] (b. 1717)
* [[August 31]] – [[Nicolas-Henri Jardin]], French architect (b. 1720)
* [[September 7]]
** [[Jan Ingenhousz]], Dutch physician, physiologist, biologist, and chemist (b. 1730)
** [[Louis Guillaume Lemonnier]], French botanist (b. 1717)
* [[October 6]] – [[William Withering]], British physician (b. 1741)
* [[October 9]] – [[Pierre Pigneau de Behaine]], French priest who helped to establish the [[Nguyễn dynasty]] (b. 1741)
* [[October 20]] – [[James Iredell]], [[Associate Justice of the Supreme Court of the United States]] (b. 1751)
* [[October 24]] – [[Carl Ditters von Dittersdorf]], Austrian composer (b. 1739)
* [[November 22]] – [[Judith van Dorth]], Dutch orangist (b. 1747)
* [[November 23]] – [[Mark Robinson (Royal Navy officer)]], Royal Navy admiral (b. 1722)
* [[December 6]] – [[Joseph Black]], Scottish physician, physicist, and chemist (b. 1728)
* [[December 14]] – [[George Washington]], military leader of the American Revolution, president of the Constitutional Convention (1787), and the 1st President of the United States (b. 1732)
* [[December 18]] – [[Jean-Étienne Montucla]], French mathematician (b. 1725)
* [[December 31]] – [[Jean-François Marmontel]], French historian and writer (b. 1723)<ref>{{cite book|author1=Mueller von Asow|author2=Erich Hermann|author3=Mueller von Asow|title=Collected Correspondence and Papers|publisher=Barrie and Rockliff|year=1962|page=67}}</ref>