Rajecká Lesná (formerly Slovak: Fryvald-Lesná; Hungarian: Frivaldnádas, until 1906 Hungarian: Trsztyennafrivald) is a village and municipality in Žilina District in the Žilina Region of northern Slovakia.
In historical records, the village was first mentioned in 1474.Rajecka Lesna has been a place of pilgrimage since the 15th century. The largest pilgrimage takes place on 8 September, the feast of Virgin Mary's Nativity.
The municipality lies at an altitude of 513 metres and covers an area of 39.264 km². It has a population of about 1300 people.