Editing 1829 (section)

=== January–June ===
* [[January 6]] – [[Amalia Holst]], German writer, intellectual, and feminist (b. 1758)
* [[January 12]] – [[Karl Wilhelm Friedrich Schlegel]], German poet, philosopher, and philologist (b. 1772)
* [[January 25]] – [[William Shield]], English violinist, composer (b. 1748)
* [[January 29]] 
** [[Paul Barras]], French politician (b. 1755)
** [[István Pauli]] (Pável) [[Hungarian Slovenes|Hungarian Slovene]] priest, writer (b. 1760)
** [[Timothy Pickering]], American politician (b. 1745)
* [[February 10]] – [[Pope Leo XII]] (b. 1760)
* [[February 11]] – [[Alexander Griboyedov]], Russian playwright, diplomat (b. 1795)
* [[February 17]] – [[Michel Ange Bernard Mangourit]], French diplomat (b. 1752)
* [[February 21]] – [[Kittur Chennamma]], Indian queen regnant (b. 1778)
* [[February 26]] – [[Johann Heinrich Wilhelm Tischbein]], German painter (b. 1751)
* [[March 2]] – [[Karl Gottfried Hagen]], German chemist (b. 1749)
* [[March 5]] – [[John Adams (mutineer)|John Adams]], last surviving  ''[[Mutiny on the Bounty|Bounty]]'' mutineer (b. 1767)
* [[March 8]] – [[Francesco Ruspoli, 3rd Prince of Cerveteri]] (b. 1752)
* [[March 30]] – [[Christopher Frederik Lowzow]], Danish-Norwegian army officer (b. 1752)
* [[April 6]] – [[Niels Henrik Abel]], Norwegian mathematician (b. 1802)
* [[April 18]] – [[Veronika Gut]], Swiss rebel heroine (b. 1757)
* [[May 10]] – [[Thomas Young (scientist)|Thomas Young]], English physician, linguist (b. 1773)
* [[May 17]] – [[John Jay]], first [[Chief Justice of the United States]] (b. 1745)
* [[May 21]] – [[Peter I, Grand Duke of Oldenburg]] (b. 1755)
[[File:Sir Humphry Davy, Bt by Thomas Phillips.jpg|thumb|110px|[[Humphry Davy]]]]
* [[May 29]] – [[Humphry Davy]], British chemist (b. 1778)
* [[May 30]] – [[Louis Aloysius, Prince of Hohenlohe-Waldenburg-Bartenstein]] (b. 1765)
* [[June 6]] – [[Shanawdithit]], last known pure-blooded member of the [[Beothuk]] people (b. c. 1801)
* [[June 15]] – [[Therese Huber]], German writer and scholar (b. 1764)
* [[June 27]] – [[James Smithson]], British mineralogist, chemist, whose fortune eventually went to the United States of America, and was used to initially fund the [[Smithsonian Institution]] (b. 1764)