Bréhat may refer to:
Île-de-Bréhat, an island located off the northern coast of Brittany. BRÉHAT, a real-time localization system employed by SNCF. Great Brehat, a settlement in Newfoundland and Labrador, Canada
See also Paimpol–Bréhat tidal farm, tidal turbine demonstration farm off Île-de-Bréhat near Paimpol, France