Seidewitz
{{Short description|River in Germany}}
{{Unreferenced|date=September 2020}}
{{Expand German|topic=geo|date=October 2011|Seidewitz (Fluss)}}
{{Infobox river
| name = Seidewitz
| image = Liebstadt (05) 2006-05-19.jpg
| image_size = 180
| image_alt =
| image_caption = The Seidewitz in Liebstadt
| map =
| map_size =
| map_alt =
| map_caption =
| source1_location = Eastern Ore Mountains
| mouth_location = Gottleuba
| mouth_coordinates = {{coord|50.9545|13.9373|display=inline,title}}
| subdivision_type1 = Country
| subdivision_name1 = Germany
| subdivision_type2 = State
| subdivision_name2 = Saxony
| length =
| source1_elevation =
| mouth_elevation =
| discharge1_avg =
| basin_size =
| river_system =
| tributaries_left =
| tributaries_right =
| progression = {{RGottleuba}}
}}
The Seidewitz is a river of Saxony, Germany. It is a left tributary of the Gottleuba, into which it flows in the town Pirna. Its source is in the Eastern Ore Mountains, near the village Breitenau. It flows through the town Liebstadt. Its length is about {{cvt|25|km}}.