The year 1667 in science and technology included many events, some of which are listed here.

See also: 1666 in science, other events of 1667, 1668 in science and the list of years in science.

Anatomy

• Robert Hooke demonstrates that the alteration of the blood in the lungs is essential for respiration
• Jean Denis performs the first blood transfusion from a lamb into a boy

Births

• May 26 - Abraham de Moivre, French mathematician (died 1754)
• July 27 - Johann Bernoulli, Swiss mathematician (died 1748)

Deaths