Nižná Slaná is a village and municipality in the Rožňava District in the Košice Region of middle-eastern Slovakia.
In historical records the village was first mentioned in 1360. Before the establishment of independent Czechoslovakia in 1918, Nižná Slaná was part of Gömör and Kishont County within the Kingdom of Hungary. From 1939 to 1945, it was part of the Slovak Republic.
The village lies at an altitude of 360 metres and covers an area of 18.96 km².It has a population of about 1210 people.
The village has a public library, a gymnasium and a football pitch.