is a French philosopher, anthropologist and sociologist of science. He is especially known for his work in the field of Science and Technology Studies (STS). From 2006 to 2015, he has been professor in Sciences Po, Paris.
He is director of the Médialab of Sciences Po Paris and a Centennial professor at LSE, London. Since 2015 he is also professor-at-large for at Cornell University.
Amongst others he is the author of Politics of nature: How to bring the Sciences into Democracy (1999), We have never been modern (Harvard University Press, 1991), Science in action (Harvard University Press, 1987).