Pflach is a municipality in the district of Reutte, in the Austrian state of Tyrol. It lies in the west of the country, in the Alpine region of the Außerfern, close to the border with Germany.
The village is situated about 3 km north of the centre of Reutte, the district's main town, and roughly 2.5 km south of the German border. This places it in the Lech valley area, on the route linking Reutte with the neighbouring Bavarian region across the frontier.
As a municipality in the Reutte district, Pflach is one of the smaller settlements that make up this part of Tyrol, a district characterised by its position on the Austrian-German border and its proximity to the surrounding mountains.