Donnersbach is a former municipality in the district of Liezen, in the Austrian state of Styria. It lies in the Enns Valley region of the eastern Alps, within the larger Liezen administrative district.
Since the 2015 Styria municipal structural reform, Donnersbach is no longer an independent municipality; it has been part of the municipality of Irdning-Donnersbachtal. This reform merged a number of small Styrian communes into larger administrative units.
Its name survives in the combined municipality's name, Irdning-Donnersbachtal, which also reflects the Donnersbach valley in which the area sits.