Editing 1845 (section)

=== January–June ===
[[File:George Reid cph.3c31684.jpg|thumb|right|110px|[[George Reid]]]]
[[File:Georg Cantor2.jpg|thumb|right|110px|[[Georg Cantor]]]]
[[File:Alexander III of Russia.JPG|thumb|right|110px|[[Alexander III of Russia]]]]
[[File:Roentgen2.jpg|thumb|right|110px|[[Wilhelm Conrad Röntgen]]]]
[[File:Gustaf de Laval 1875.jpg|thumb|right|110px|[[Gustaf de Laval]]]]
* [[January 7]] – King [[Ludwig III of Bavaria]] (d. [[1921]])
* [[January 29]] – [[Pyotr Bezobrazov]], Russian admiral (d. [[1906]])
* [[February 2]] – [[Ivan Puluj]], Ukrainian physicist, inventor (d. [[1918]])
* [[February 14]] – [[Quintin Hogg (merchant)|Quintin Hogg]], British [[philanthropist]] (d. [[1903]])
* [[February 15]] – [[Elihu Root]], American [[Diplomat|statesman]], [[diplomat]], recipient of the [[Nobel Peace Prize]] (d. [[1937]])
* [[February 25]] – [[George Reid|Sir George Reid]], 4th [[Prime Minister of Australia]] (d. [[1918]])
* [[March 3]] – [[Georg Cantor]], German mathematician (d. [[1918]])
* [[March 4]] – [[Henry Clay Taylor]], American [[admiral]] (d. [[1904]])
* [[March 10]] – Emperor [[Alexander III of Russia]] (d. [[1894]])
* [[March 20]] – [[Victor Child Villiers, 7th Earl of Jersey]], 18th [[Governors of New South Wales|Governor of New South Wales]] (d. [[1915]])
* [[March 27]] – [[Wilhelm Röntgen]], German [[physicist]], [[Nobel Prize in Physics|Nobel Prize]] laureate (d. [[1923]])
* [[April 4]] – [[František Plesnivý]], Austro-Hungarian architect (d. [[1918]])
* [[April 5]] – [[Jules Cambon]], French diplomat (d. [[1935]])
* [[April 22]] – [[Carlo Caneva]], Italian general (d. [[1922]])
* [[April 24]] – [[Carl Spitteler]], Swiss writer, [[Nobel Prize in Literature|Nobel Prize]] laureate (d. [[1924]])
* [[May 4]] – [[William Kingdon Clifford]], English mathematician, philosopher (d. [[1879]])
* [[May 9]] – [[Gustaf de Laval]], Swedish engineer, inventor (d. [[1913]])
* [[May 12]] – [[Gabriel Fauré]], French composer (d. [[1924]])
* [[May 14]] – [[Charles J. Train]], American admiral (d. [[1906]])
* [[May 15]] – [[Élie Metchnikoff]], Russian [[microbiologist]], recipient of the [[Nobel Prize in Physiology or Medicine]] (d. [[1916]])
* [[May 17]] – [[Jacint Verdaguer]], [[Catalans|Catalan]] poet (d. [[1902]])
* [[May 25]] – [[Eugène Grasset]], Swiss-born artist (d. [[1917]])
* [[May 30]] – King [[Amadeo I of Spain]] (d. [[1890]])
* [[May 31]] – [[R. E. B. Crompton]], British electrical engineer, industrialist and inventor (d. [[1940]])
* [[June 7]] – [[Leopold Auer]], Hungarian [[violin]]ist, composer (d. [[1930]])
* [[June 18]] – [[Charles Louis Alphonse Laveran]], French physician, recipient of the [[Nobel Prize in Physiology or Medicine]] (d. [[1922]])
* [[June 22]] – [[Richard Seddon]], 15th [[Prime Minister of New Zealand]] (d. [[1906]])