Ganz is a former municipality in the district of Bruck-Mürzzuschlag in the Austrian state of Styria. It is located in the eastern part of the country, in the mountainous region of Upper Styria.
In January 2015, Ganz was merged into the neighbouring town of Mürzzuschlag as part of a municipal structural reform in Styria. Since that date it has no longer functioned as an independent municipality, and it now forms part of Mürzzuschlag's municipal territory.