Hubert Lederer Dreyfus is an American philosopher. He is a professor of philosophy at the University of California, Berkeley researching phenomenology, existentialism and the philosophy of psychology and literature.

Dreyfus is known for his exegesis of Martin Heidegger, which critics labeled “Dreydegger”. Many of his students have gone to do work on themes related to Heidegger and phenomenology, including Charles Guignon, Mark Wrathall, Sean Kelly, John Haugeland, and John Richardson.

Dreyfus was educated at Harvard University, earning three degrees there, with a BA in 1951, an MA in 1952, and a PhD in 1964, under the supervision of Dagfinn Føllesdal. Dreyfus is well known for his critique of Cognitive Science and especially of work on Artificial Intelligence.