Ganz ( [ˈɡants]) is a surname. Notable people with the surname include:
Ábrahám Ganz, Swiss merchant and founder of the Ganz companiesBruno Ganz, Swiss actorDavid L. Ganz, American politicianEdwin F. Ganz, American politicianHoward Ganz, Current President of Ganz (toy company)Joan Ganz Cooney, American businesswoman and television producerJosef Ganz, German car designerLowell Ganz, American screenwriterMaurizio Ganz, Italian former footballerP. Felix Ganz (1922 -1990), of Chicago, IllinoisRudolph Ganz, Swiss pianist, conductor, and composerSebastian Ganz, fictional characterValerie Ganz, Welsh painterVictor Ganz (1913–1987), art collectorRobert A. Ganz, MD, gastroenterologist and medical inventor