The year 1728 in science and technology included many events, some of which are listed here.

See also: 1727 in science, other events of 1728, 1729 in science and the list of years in science.

Physics

• James Bradley uses stellar aberration to calculate the speed of light to be approximately 301 000 km/s

Births

• September 3 - Matthew Boulton, engineer (died 1809)
• October 27 - James Cook, explorer (died 1779)
• John Hunter, Scottish surgeon, pathologist, and comparative anatomist (died 1793)
• Joseph Black, Scottish physicist and chemist (died 1799)

Deaths