The year 1612 CE in science and technology included many events, some of which are listed here.

See also: 1611 in science, other events of 1612, 1613 in science and the list of years in science.

Astronomy

• The first description of the Andromeda Galaxy based on telescopic observation was given by Simon Marius

Medicine

• Santorre Santorio puts the thermometer to medical use

Births

• William Gascoigne (aprox) British inventor

Deaths

• Christopher Clavius, German mathematician and astronomer (born 1537)