Gablitz is a municipality in the district of St. Pölten-Land, in the Austrian state of Lower Austria. It lies in the eastern part of the state, within the Vienna Woods (Wienerwald) area west of Vienna.
As a municipality, Gablitz is one of the local administrative units that make up the St. Pölten-Land district, the district surrounding the city of St. Pölten, the capital of Lower Austria. The surrounding region is characterized by its wooded hills and proximity to the Vienna metropolitan area.