Tuchyňa (Hungarian: Tohány) is a village and municipality in Ilava District in the Trenčín Region of north-western Slovakia.
In historical records the village was first mentioned in 1243.
The municipality lies at an altitude of 275 metres and covers an area of 5.444 km². It has a population of about 779 people.
Coordinates: 49°02′N 18°13′E / 49.033°N 18.217°E