Lasauvage (Luxembourgish: Zowaasch) (German: — notionally only — Rohrbach) is a small town in the commune of Differdange, in south-western Luxembourg.Lasauvage was known as one of the few French-speaking towns in an otherwise Luxembourgish-speaking country. Unlike many German alternatives to place names in Luxembourg, Lasauvage's German equivalent, Rohrbach, has been little-used because of its perceived Nazi associations.