Lingenau is a municipality in the district of Bregenz, in the westernmost Austrian state of Vorarlberg. It lies in the Bregenzerwald, the forested alpine region that makes up the eastern part of the Bregenz district.
The village sits on a high plateau above the Subersach valley, at an elevation of roughly 700 metres. Its landmark is the parish church of St. Christoph, a Baroque building with a distinctive onion dome. Lingenau is also home to the Bregenzerwald cheese dairy, one of the region's main producers of mountain cheese.
The municipality is reached by road via the L200, which connects it with Egg to the south and Hittisau to the north. The nearest railway station is in Bregenz, about 30 kilometres to the west.