Editing 1969 in science (section)

==Deaths==
* March 3 – [[Elizabeth Laird (physicist)|Elizabeth Laird]] (born [[1874 in science|1874]]), [[Canadians|Canadian]] [[physicist]].
* April 8 – [[Zinaida Aksentyeva]] (born [[1900 in science|1900]]), Ukrainian/Soviet astronomer and gephysicist.
* May 8 – [[Sydney Smith (forensic expert)|Sir Sydney Smith]] (born [[1883 in science|1883]]), New Zealand-born [[Forensic pathology|forensic pathologist]].
* May 14 – [[Walter Pitts]] (born [[1923 in science|1923]]), American [[logician]] and [[cognitive psychologist]].
* June 1 – [[Michiyo Tsujimura]] (born [[1888 in science|1888]]), Japanese agricultural scientist
* June 18 – [[Edgar Anderson]] (born [[1897 in science|1897]]), American botanist
* June 24 – [[Willy Ley]] (born [[1906 in science|1906]]), [[German American]] scientific populariser.
* August 8 – [[Otmar von Verschuer]] (born [[1896 in science|1896]]), [[German people|German]] [[eugenicist]].
* August 9 – [[C. F. Powell]] (born [[1903 in science|1903]]), British physicist, [[Nobel Prize in Physics|Nobel Prize]] laureate in 1950.
* August 17 – [[Otto Stern]] (born [[1888 in science|1888]]), German [[physicist]], [[Nobel Prize in Physics|Nobel laureate in Physics]] in [[1943 in science|1943]].
* September 16 – [[Henry Fairfield Osborn, Jr.]] (born [[1887 in science|1887]]), American [[conservation movement|conservationist]].
* September 24 – [[Warren Sturgis McCulloch]] (born [[1898 in science|1898]]), American [[neurophysiologist]] and [[cybernetics|cybernetician]].
* October 21 – [[Wacław Sierpiński]] (born [[1882 in science|1882]]), [[Poland|Polish]] [[mathematician]].
* November 12 – [[William F. Friedman]] (born [[1891 in science|1891]]), [[Russian American]] [[cryptanalyst]].