Lietavská Lúčka (Hungarian: Litvailló) is a village and municipality in Žilina District in the Žilina Region of northern Slovakia.
In historical records the village was first mentioned in 1393.
The municipality lies at an altitude of and covers an area of 6.496km2. It has a population of about 1769 people. It has a large gender imbalance with women outnumbering men almost 2 to 1.