Obdach is a municipality in the district of Murtal, in the Austrian state of Styria. It lies in the federal province of Styria in southeastern Austria, within the Murtal district, whose administrative centre is Judenburg.
The area is part of the traditional region of Upper Styria (Obersteiermark), a largely mountainous and forested part of the country. Obdach is one of the municipalities that make up the Murtal district, which was formed in 2012 through the merger of the former Judenburg and Knittelfeld districts.
As a municipality, Obdach is a local administrative unit responsible for its resident population and communal services. Detailed information on its geography, history, and population is limited in the available source material.