Yes the name "Ganz" is a Jewish name and the meaning of the name is "whole". The origin of the name is German and it is considered a variant of Gans which means "goose".
Is Ganz A Jewish Surname?
- German and
Swiss German: Variant of Gans
‘goose’. - German: From a short form of the Germanic personal name
Ganso, a cognate of modern German ganz ‘whole’, ‘all’. - German: Possibly also from an altered form, under Russian
influence, of the personal name Hans, a short form of
Johannes (see John).
- Jewish (Ashkenazic):
Ornamental name from German ganz ‘whole’.
Ganz is also a North Italian surname known present in Veneto and Trentino. A Jewish origin going back hundreds of years is possible.