Kotrčiná Lúčka (Hungarian: Kaszásrét) is a village and municipality in Žilina District in the Žilina Region of northern Slovakia.

In historical records the village was first mentioned in 1439.

The municipality lies at an altitude of 480 metres and covers an area of 4.149 km². It has a population of about 404 people.

The records for genealogical research are available at the state archive "Statny Archiv in Bytca, Slovakia"

• Roman Catholic church records (births/marriages/deaths): 1789-1900 (parish B)

• List of municipalities and towns in Slovakia

• https://web.archive.org/web/20090412234949/http://www.statistics.sk/mosmis/eng/run.html
• Surnames of living people in Kotrcina Lucka

49°15′N 18°50′E / 49.250°N 18.833°E / 49.250; 18.833