| Lossa | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Saxony |
| Subdivision Type3: | Reference no. |
| Subdivision Name3: | DE: 5492 |
| Source1 Location: | near Falkenhain (confluence of its headstreams) |
| Mouth Location: | south of Eilenburg into the Mulde |
| Basin Landmarks: | Small towns: Wurzen, Belgern-Schildau, Eilenburg |
| River System: | Elbe |
| Custom Label: | References |
The Lossa is a small river in Saxony, Germany. It is a tributary of the Mulde.
The Lossa rises east of the Wurzen village of Kühren. The Lossabach, a tributary of the Lossa, has its origin east of the village of Ochsensaal (which belongs to Dahlen). In the vicinity of the Lossatal village of Müglenz the Lossabach empties into the Lossa. The Lossa then continues northwest through Hohburg, past the southern side of the Hohburg Hills, through the eponymous village of Lossa (a district of Thallwitz) and through Thallwitz. Just south of Eilenburg the stream discharges into the Mulde. Originally it joined the main river several hundred metres further north, but due to the construction of the German Celluloid Factory in Eilenburg, it was diverted into the Mulde just before entering the town borough in the second half of the 19th century.
In Thallwitz the stream is impounded by a small weir to form a pond, the Herrenteich.[1]