Editing 1803 (section)

=== January–June ===
[[File:Chydenius.jpg|thumb|110px|right|[[Anders Chydenius]]]]
[[File:Klopstock (Füßli).jpg|thumb|right|110px|[[Friedrich Gottlieb Klopstock]]]]
[[File:Général Toussaint Louverture.jpg|thumb|right|110px|[[Toussaint Louverture]]]]
* [[January 1]] – [[James Woodforde]], English clergyman, [[diarist]] (b. 1740)
* [[January 18]] – [[Ippolit Bogdanovich]], Russian poet (b. 1743)
* [[January 23]] – [[Arthur Guinness]], Irish brewer (b. 1725)
* [[February 1]] – [[Anders Chydenius]], Finnish priest, politician (b. 1729)<ref>{{cite web
|last=Pelo
|first=June
|title=Anders Chydenius
|access-date=December 9, 2020
|url=http://sydaby.eget.net/swe/jp_chydenius.htm
|archive-url= https://web.archive.org/web/20071030084557/http://sydaby.eget.net/swe/jp_chydenius.htm| archive-date= October 30, 2007 | url-status= live}}</ref>
* [[February 3]] – [[María Isidra de Guzmán y de la Cerda]], Spanish scholar (b. 1768)
* [[February 9]] – [[Jean François de Saint-Lambert]], French poet (b. 1716)
* [[February 11]] – [[Jean-François de La Harpe]], French critic (b. 1739)
* [[February 18]] – [[Johann Wilhelm Ludwig Gleim]], German poet (b. 1719)
* [[February 20]] – [[Marie Dumesnil]], French actress (b. 1713)
* [[February 22]] – [[Jacques-Donatien Le Ray de Chaumont]], French ''Father of the American Revolution'' (b. 1726)
* [[February 23]] – [[Praskovia Kovalyova-Zhemchugova]], Russian serf actress, opera soprano (b. 1768)
* [[February 21]] – [[Edward Despard]], British revolutionary (b. 1751)
* [[March 14]] – [[Friedrich Gottlieb Klopstock]], German poet (b. 1724)
* [[March 28]] – [[Peter Du Cane, Sr.]], British businessman (b. 1713)
* [[April 2]] – [[Sir James Montgomery, 1st Baronet]], Scottish politician, judge (b. 1721)
* [[April 6]] – [[William Hamilton (diplomat)|William Hamilton]], British diplomat, antiquary (b. 1730)
* [[April 7]]
** [[Antoine de Bosc de la Calmette]], Danish statesman, landscape architect (b. 1752)
** [[Toussaint L'Ouverture]], Haitian revolutionary (b. 1743)
* [[April 14]] – [[Christoph Anton Migazzi]], Austrian Catholic bishop (b. 1714)
* [[April 24]] – [[Adélaïde Labille-Guiard]], French portrait painter (b. 1749)
* [[May 8]] – [[John Joseph Merlin]], Belgian-born British clock- and musical-instrument-maker and inventor (b. 1735)
* [[May 29]] – [[Louis-Antoine Caraccioli]], French writer (b. 1719)
* [[June 24]] – [[Matthew Thornton]], American signer of the Declaration of Independence (b. 1714)
* [[June 26]] – [[Fermín Lasuén]], Spanish missionary (b. 1736)