Längenmühlbach
Längenmühlbach is the name of the following rivers in Bavaria:
- Längenmühlbach (Danube) , right tributary of the Danube opposite Bergheim, district of Neuburg-Schrobenhausen
- Längenmühlbach (Isar) , Mühlkanal on the left of the Isar to Plattling, Deggendorf district