| Fallbach | |
| Mouth Coordinates: | 47.2744°N 11.3954°W |
| Subdivision Type1: | Country |
| Length: | 7.3km (04.5miles) |
| Source1 Elevation: | 900m (3,000feet) |
The Fallbach is a small river in Tyrol, Austria, a tributary of the Inn. The Fallbach lies in full in Innsbruck's city area. It should not be confused with the similarly-named river, a left Inn tributary in Baumkirchen.
The Fallbach has a length of . It originates near the German: Gramart area on the German: Hungerburg at above sea level. It runs straight in southern direction to German: St. Nikolaus where it merges with the Inn.
The water of the river is collected in two artificial reservoirs and supplies the areas of German: St. Nikolaus and German: Höhenstraße with drinking water. This often causes locally low water levels in the Fallbach.