Lúky (Hungarian: Alsórétfalu) is a village and municipality in Púchov District in the Trenčín Region of north-western Slovakia.
In historical records the village was first mentioned in 1471.
The municipality lies at an altitude of 345 metres and covers an area of 7.736 km². It has a population of about 950 people.
Coordinates: 49°11′30″N 18°13′24″E / 49.1917°N 18.2233°E / 49.1917; 18.2233