The year 1647 in science and technology consisted of many events, some of which are listed below.

See also: 1646 in science, other events of 1647, 1648 in science, and the list of years in science.

Astronomy

• Johannes Hevelius publishes the first comparatively detailed map of the Moon in his Selenographia

Births

• April 2 - Maria Sibylla Merian , German biologist and entomologist who studied the life cycles of butterflies (died 1717)
• Denis Papin, French physicist and technologist (died c1712)

Deaths

• Evangelista Torricelli, Italian physicist and mathematician (born 1608)