Defaux (surname)

Defaux is a surname popular in Belgium and northeastern France.
Like its cognates/variants De Fauw and Faux, it could derive from fou, fau ; be a toponymic surname indicating origin from a place called Faux or Faulx or derive from the adjective "faux".
The etymology of the place names in Belgium is ultimately from Latin fagus via Old French fou, fau, or from Germanic *falisa, "cliff".
Notable people with the name include: