Izabel Žefroa (franc. Isabelle Geffroy), poznatija pod scenskim imenom Zaz (franc. Zaz; Tur, 1. maj 1980), francuska je pevačica džez muzike koja u svom repertoaru kombinuje više srodnih žanrova poteklih iz francuske gradske muzike.
Isabelle Geffroy (born 1 May 1980 in Tours, France), better known by the nickname Zaz, is a French singer-songwriter who mixes jazzy styles, French variety, soul and acoustic. She is famous for her hit "Je veux", from her first album, Zaz, released on 10 May 2010
