Kolačno (Hungarian: Kalacsna) is a village and municipality in Partizánske District in the Trenčín Region of western Slovakia.

In historical records the village was first mentioned in 1293.

The municipality lies at an altitude of 240 metres and covers an area of 21.314 km2.

The records for genealogical research are available at the state archive "Statny Archiv in Nitra, Slovakia" Media related to Kolačno at Wikimedia Commons

This Trenčín District location article is a stub.