Dolná Súča (Hungarian: Alsószúcs ) is a village and municipality in Trenčín District in the Trenčín Region of north-western Slovakia.
In historical records the village was first mentioned in 1208.
The municipality lies at an altitude of 285 metres and covers an area of 26.319 km². It has a population of about 2917 people.
The records for genealogical research are available at the state archive "Statny Archiv in Bratislava, Slovakia"