Nižný Komárnik (Hungarian: Alsókomárnok) is a village and municipality in Svidník District in the Prešov Region of north-eastern Slovakia.

In historical records the village was first mentioned in 1618.

[citation needed] The municipality lies at an altitude of 370 metres and covers an area of 12.381 km2.

It has a population of about 148 people.

This Prešov Region geography article is a stub.