Editing 1903 (section)

===July–December===
[[File:Leo XIII.jpg|thumb|110px|[[Pope Leo XIII]]]]
[[File:Robert-Gascoyne-Cecil-3rd-Marquess-of-Salisbury.jpg|thumb|110px|[[Lord Salisbury]]]]
[[File:T-mommsen-2.jpg|thumb|110px|[[Theodor Mommsen]]]]
[[File:Pissarro-portrait.jpg|thumb|110px|[[Camille Pissarro]]]]
* [[July 2]] &ndash; [[Ed Delahanty]], American baseball player, [[MLB Hall of Fame]]r (b. [[1867]])
* [[July 3]] &ndash; [[Harriet Lane]], Acting [[First Lady of the United States]] (b. [[1830]])
* [[July 11]] &ndash; [[William Ernest Henley]], English poet, critic and editor (b. [[1849]])
* [[July 13]] &ndash; [[Béni Kállay]], Austro-Hungarian statesman (b. [[1839]])
* [[July 14]] 
** [[Sahibzada Abdul Latif]], Afghan royal advisor and [[Ahmadiyya|Ahmadi]] martyr (b. [[1853]])
** [[Manuel Antonio Caro]], Chilean painter (b. [[1835]])
* [[July 17]] &ndash; [[James McNeill Whistler]], American painter (b. [[1834]])
* [[July 20]] &ndash; [[Pope Leo XIII]], Italian Roman Catholic Pope (b. [[1810]])
* [[July 21]] – [[Henri Alexis Brialmont]], military architect (b. [[1821]])
* [[July 27]] – [[Lina Sandell]], hymn writer (b. [[1832]]).
* [[August 1]] &ndash; [[Calamity Jane]], American frontierswoman (b. [[1852]])
* [[August 3]] &ndash; [[Édouard Pottier]], French admiral (b. [[1839]])
* [[August 5]] &ndash; [[Phil May (caricaturist)|Phil May]], English artist (b. [[1864]])
* [[August 11]] &ndash; [[Eugenio María de Hostos]], Puerto Rican philosopher, sociologist (b. [[1839]])
* [[August 17]] &ndash; [[Hans Gude]], Norwegian painter (b. [[1825]])
* [[August 22]] &ndash; [[Robert Gascoyne-Cecil, 3rd Marquess of Salisbury]], Prime Minister of the United Kingdom (b. [[1830]])
* [[August 23]] &ndash; [[Fray Mocho]], Argentine writer (b. [[1858]])
* [[August 27]] – [[Kusumoto Ine]], physician, first female doctor of Western medicine in Japan (b. [[1827]])
* [[August 28]] &ndash; [[Frederick Law Olmsted]], American landscape architect (b. [[1822]])
* [[August 30]] &ndash; [[Joe Warbrick]], [[Māori people|Māori]] [[rugby union]] player (b. 1862).
* [[31 August|August 31]] – [[William Hastie]], clergyman and theologian (b. [[1842 in Scotland|1842]])
* [[September 1]] &ndash; [[Charles Renouvier]], French philosopher (b. [[1815]])
* [[September 2]] &ndash; [[Julia McNair Wright]], American author (b. [[1840]])
* [[September 13]] &ndash; [[Carl Schuch]], Austrian painter (b. [[1846]])
* [[September 14]] – [[Johanna Berglind]], sign language teacher and principal (b. [[1816]]).
* [[September 18]] 
** [[Alexander Bain (philosopher)|Alexander Bain]], Scottish philosopher (b. [[1818]])
** [[Jules Pellechet]], French architect (b. [[1829]])
* [[September 19]] &ndash; [[Washington Teasdale]], English engineer (b. [[1830]])
* [[October 4]] &ndash; [[Otto Weininger]], Austrian-Jewish author (b. [[1880]])
* [[October 20]] &ndash; [[Thomas Vincent Welch]], American politician (b. [[1850]])
* [[October 22]] &ndash; [[William Edward Hartpole Lecky]], Irish historian, member of the [[House of Commons of the United Kingdom|House of Commons]] (b. [[1838]]
* [[October 27]] – [[Erika Nissen]], pianist (b. [[1845]])
* [[November 1]] &ndash; [[Theodor Mommsen]], German writer, [[Nobel Prize in Literature|Nobel Prize]] laureate (b. [[1817]])<ref>Carter, Jesse Benedict. [https://archive.org/stream/atlantic93bostuoft#page/372/mode/2up "Theodor Mommsen,"] ''The Atlantic Monthly'', Vol. XCIII, 1904.</ref>
* [[November 11]] &ndash; [[Lavilla Esther Allen]], American author (b. [[1834]])
* [[November 13]] &ndash; [[Camille Pissarro]], French painter (b. [[1830]])
* [[November 20]] – [[Tom Horn]], gunfighter and outlaw (born [[1860 in the United States|1860]])
* [[November 25]] &ndash; [[Sabino Arana]], Spanish Basque writer, nationalist (b. [[1865]])
* [[December 8]] &ndash; [[Herbert Spencer]], English philosopher (b. [[1820]])
* [[December 27]] &ndash; [[Lydia Hoyt Farmer]], American author, women's rights activist (b. [[1842]])
* [[December 28]] &ndash; [[Margaret Frances Sullivan]], Irish-born American author, journalist and editor (b. [[1847]])
* [[December 29]]  
** [[Baba Jaimal Singh]], Founder of Radha Soami Satsang Beas (b. [[1839]])
** [[Jerome Sykes]], American actor (b. [[1868]])