Nové Mesto nad Váhom (; Slovak pronunciation: [ˈnɔʋeː mestɔ ˈnad ʋaːɦɔm]; German: Neustadt an der Waag, Neustadtl, Waag-Neustadtl, Waagneustadtl, Waag-Neustadt; Hungarian: Vágújhely, Vág-Újhely) is a town in the Trenčín Region of Slovakia.