The organisation has been a member of the International Union of Socialist Youth since 1996 and a member of the Young European Socialists since 2001.
NS kuuluvad aastast 1996. aastast Noorte Sotsialistide Rahvusvahelisse Liitu (International Union of Socialist Youth) ja 2001. aastast ühendusse Euroopa Noored Sotsialistid (Young European Socialists).