Jazernica (Hungarian: Márkfalva) is a village and municipality in Turčianske Teplice District in the Žilina Region of northern central Slovakia.

The village was first mentioned in historical records from 1361.

Before the establishment of independent Czechoslovakia in 1918, it was part of Turóc County within the Kingdom of Hungary.

The municipality lies at an altitude of 448 metres and covers an area of 2.921 km2.

The records for genealogical research are available at the state archive "Statny Archiv in Bytca, Slovakia" This Žilina Region geography article is a stub.