Neudau is a municipality in the district of Hartberg-Fürstenfeld, in the Austrian state of Styria. It lies in the eastern part of the country, within the federal province of Styria (Steiermark).
As a municipality, Neudau is one of the local administrative units that make up the Hartberg-Fürstenfeld district. The district itself was formed in 2013 through the merger of the former Hartberg and Fürstenfeld districts, and it occupies the eastern portion of Styria, bordering Burgenland.
Neudau is a small settlement typical of the rural communities found throughout this part of eastern Austria. Detailed information about its history, population, and landmarks is limited in the available sources.