Krumbach is a village and municipality in the Bregenz district of Vorarlberg, the westernmost state of Austria. It lies in the Bregenzerwald, the Alpine region that makes up much of the district, and is one of the smaller communities in the area.
The municipality has a population of about 1,000 inhabitants. As a village of this size, it is typical of the scattered rural settlements found throughout Vorarlberg's mountain valleys.