Editing 1920 in science (section)

==Births==
* January 20 – [[John Maynard Smith]], British theoretical [[evolutionary biologist]] and [[geneticist]] (died [[2004 in science|2004]]).
* February 7 – [[An Wang]], Chinese-born computer engineer (died [[1990 in science|1990]]).
* February 3 – [[Henry Heimlich]], American thoracic surgeon (died [[2016 in science|2016]]).
* March 11 – [[Nicolaas Bloembergen]], [[Dutch people|Dutch]] [[physicist]], [[Nobel Prize in Physics|Nobel Prize]] laureate (died [[2017 in science|2017]]).
* March 15 – [[E. Donnall Thomas]], American [[physician]], [[Nobel Prize in Physiology or Medicine|Nobel Prize]] laureate.
* March 22 – [[Katsuko Saruhashi]] Japanese [[geochemist]] (died [[2007 in science|2007]]).
* March 23 – [[Barbara Low (biochemist)|Barbara Low]], English-born [[biochemist]] (died [[2019 in science|2019]]).
* April 6 – [[Edmond H. Fischer]], [[Swiss American]] [[biochemist]], [[Nobel Prize in Physiology or Medicine|Nobel Prize]] laureate (died [[2012 in science|2012]])
* April 9 – [[Alex Moulton]], English [[mechanical engineer]] and [[inventor]] (died 2012).
* May 12 – [[Tang Dingyuan]], Chinese physicist (died [[2019 in science|2019]]).
* June 17 – [[François Jacob]], French [[biologist]], [[Nobel Prize in Physiology or Medicine|Nobel Prize]] laureate (died [[2013 in science|2013]]).
* July 10 – [[Owen Chamberlain]], American physicist, [[Nobel Prize in Physics|Nobel Prize]] laureate (died [[2006 in science|2006]]).
* July 11 – [[David Challinor]], American [[biologist]], [[Natural history|naturalist]] and scientific administrator at the [[Smithsonian Institution]] (died [[2008 in science|2008]]).
* July 25 – [[Rosalind Franklin]], English [[X-ray crystallography|crystallographer]] (died [[1958 in science|1958]]).
* July 30 – [[Marie Tharp]], American geologist (died [[2006 in science|2006]]).
* August 15 – [[Eleonore Trefftz]], German molecular and nuclear physicist (died [[2017 in science|2017]]).
* August 22 – [[Denton Cooley]], American cardiac surgeon (died [[2016 in science|2016]]).
* September 29 – [[Peter D. Mitchell]], English [[chemist]], [[Nobel Prize in Chemistry|Nobel Prize]] laureate (died [[1992 in science|1992]]).
* October 29 – [[Baruj Benacerraf]], [[Venezuela]]n [[immunologist]], [[Nobel Prize in Physiology or Medicine|Nobel Prize]] laureate (died [[2011 in science|2011]]).
* November 13 – [[Abraham Lilienfeld]], American [[epidemiologist]] (died [[1984 in science|1984]]).
* December 6 – [[George Porter]], English [[chemist]], [[Nobel Prize in Chemistry|Nobel Prize]] laureate (died [[2002 in science|2002]]).