1739 in science

	… 1729; 1730; 1731; 1732; 1733; 1734; 1735; ; 1736; 1737; 1738; 1739; 1740; 1741; 1742; ; 1743; 1744; 1745; 1746; 1747; 1748; 1749 …;
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The year 1739 in science and technology involved some significant events.

Earth sciences

Leonhard Euler solves the general homogeneous linear ordinary differential equation with constant coefficients.
Euler invents the tonnetz (German for "tone-network"), a conceptual lattice diagram that shows a two-dimensional tonal pitch space created by the network of relationships between musical pitches in just intonation.^[1]^[2]

Émilie du Châtelet publishes Dissertation sur la nature et la propagation du feu.

November 14 – William Hewson, English surgeon, anatomist and physiologist, "father of haematology" (died 1774)
December 14 – Pierre Samuel du Pont de Nemours, French industrialist (died 1817)
Israel Lyons, English mathematician and botanist (died 1775)

April 19 – Nicholas Saunderson, English scientist and mathematician (born 1682)
April 27 – Nicolas Sarrabat, French scientist, astronomer and mathematician (born 1698)

^ Euler, Leonhard. Tentamen novae theoriae musicae.
^ Derbyshire, John (Spring 2007). "Euler's Constancy". The Wilson Quarterly. Archived from the original on 2007-10-11. Retrieved 2008-01-03.
^ "Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved 21 July 2020.
^ "History". Kungl. Vetenskapsakademien. Retrieved 2011-09-27.