RK Železničar Niš (Serbian Cyrillic: РК Железничар Ниш) was a Serbian handball club based in Niš.

They went on to compete in the Yugoslav Championship for over 20 seasons.

In 1976–77, the club won its first trophy, the Yugoslav Cup.

On 7 September 2009, the club merged with ORK Niš to form RK Naissus.

[1] Yugoslav Cup / FR Yugoslavia Cup During its history, the club has been known by a variety of names due to sponsorship reasons: The list includes players who played for their respective national teams in any major international tournaments, such as the Olympic Games, World Championships and European Championships: