| Asdorf | |
| Mouth Location: | Sieg |
| Mouth Coordinates: | 50.8088°N 7.8778°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | States |
| Subdivision Name2: | North Rhine-Westphalia and Rhineland-Palatinate |
| Length: | 20.7km (12.9miles) |
Asdorf (also: Asdorfer Bach, in its upper course: Weibe) is a river of North Rhine-Westphalia and Rhineland-Palatinate, Germany. It flows into the Sieg in Kirchen.