Naas is a municipality in the district of Weiz, in the Austrian state of Styria. It lies in the eastern part of Styria, within the Weiz district, a region of rolling hills and mixed farmland northeast of Graz.
The municipality is divided into five cadastral communities: Affental, Birchbaum, Dürntal, Gschaid bei Weiz, and Naas. These units reflect the area's dispersed settlement pattern, in which the municipality comprises several small villages and hamlets rather than a single compact town.