Dreyfus could refer to:

a Dreyfus affair Louis Dreyfus Group, a company The Dreyfus Corporation, a Mellon Financial Corporation subsidiary.

People
Alfred Dreyfus, was a Jewish French officer, better known for existence a focus of the Dreyfus affair Matthew Dreyfus, brother of Alfred René Dreyfus was a Jewish French Grand Prix race car driver Hubert Dreyfus, professor at Berkeley Gerard Louis-Dreyfus, a French businessman

;Actors James Dreyfus Julie Dreyfus Julia Louis-Dreyfus