Schlins is a municipality in the district of Feldkirch, in the Austrian state of Vorarlberg. It lies in the westernmost part of Austria, a region that borders Switzerland and Liechtenstein.
As a municipality, Schlins is one of the local administrative units within the Feldkirch district, which forms part of Vorarlberg's system of local government. The surrounding area is part of the Alpine Rhine valley, a landscape characteristic of this corner of Austria.