Klieština (Hungarian: Kelestény) is a village and municipality in Považská Bystrica District in the Trenčín Region of north-western Slovakia.
In historical records the village was first mentioned in 1408.
The municipality lies at an altitude of 390 metres and covers an area of 5.315 km². It has a population of about 372 people.
The records for genealogical research are available at the state archive "Statny Archiv in Bytca, Slovakia"
Coordinates: 49°11′N 18°21′E / 49.183°N 18.350°E