Omastiná (Hungarian: Csermely) is a village and municipality in Bánovce nad Bebravou District in the Trenčín Region of north-western Slovakia.

In historical records the village was first mentioned in 1389.

The municipality lies at an altitude of 300 metres and covers an area of 12.448 km². It has a population of about 43 people.

• http://www.statistics.sk/mosmis/eng/run.html