Editing 1845 in science (section)

==Births==
*February 17 (Old Style March 1) – [[Fyodor Pirotsky]] (died [[1898 in science|1898]]), Ukrainian-born Russian military and electrical engineer and inventor.
* March 3 – [[Georg Cantor]] (died [[1918 in science|1918]]), Russian-born German [[mathematician]].
* March 27 – [[Wilhelm Röntgen]] (died [[1923 in science|1923]]), German [[physicist]], discoverer of [[X-rays]], [[Nobel laureate]].
* April 21 – [[William Healey Dall]] (died [[1927 in science|1927]]), American [[malacologist]] and explorer.
* May 4 – [[William Kingdon Clifford]] (died [[1879 in science|1879]]), English [[geometer]].
* May 16 – [[Élie Metchnikoff]] (died [[1916 in science|1916]]), Russian-born [[microbiologist]], Nobel laureate.
* June 16 – [[Heinrich Dressel]] (died [[1920 in science|1920]]), German [[archaeologist]].
* July 4 – [[Thomas John Barnardo|Thomas Barnardo]] (died [[1905 in science|1905]]), Irish-born [[physician]] and [[philanthropist]].
* September 11 – [[Émile Baudot]] (died [[1903 in science|1903]]), French [[telegraph]] engineer.
* November 14 – [[Ulisse Dini]] (died [[1918 in science|1918]]), Italian mathematician.