Salka (Hungarian: Ipolyszalka) is a village and municipality in the Nové Zámky District in the Nitra Region of south-west Slovakia.
In historical records the village was first mentioned in 1156.
The municipality lies at an altitude of 110 metres and covers an area of 26.066 km². It has a population of about 1,069 people.
The population is about 94% Hungarian and 6% Slovak.
The village has a small public library, a gym and a football pitch.
Coordinates: 47°53′N 18°46′E / 47.883°N 18.767°E