| Schmiddis | |
| Mouth Location: | Haslach |
| Mouth Coordinates: | 47.9542°N 10.0553°W |
| Progression: | Haslach→ |
| Subdivision Type1: | Country |
| Length: | 7km (04miles) |
| Source1 Elevation: | 655m (2,149feet) |
| Mouth Elevation: | 645m (2,116feet) |
The Schmiddis (also: Schmiddisbach) is one of the headstreams of the river Haslach. It is situated in the region of Upper Swabia in Baden Württemberg, Germany.
The Schmiddis is a small stream which has its source in the hamlet of Schmiddis near Treherz, part of the municipality of Aitrach in the district of Ravensburg. It runs in a northerly direction for 3 kilometres, It joins the Rappenbach at the retention basin Rappenbach, forming the river Haslach.
Two bridges cross the Schmiddis, one for the state road 314, and a second one close to the mouth of the stream near the retention basin Rappenbach.