Norske Idrettsutøveres Sentralorganisaison (Niso) is an organization that represents and safeguards the interests of athletes in Norway. The organization works to promote the rights of athletes, as well as to contribute to the development of sport in the country. Niso offers support and guidance to its members, and focuses on various aspects such as contractual relations, career advice and health.
Niso is also engaged in collaboration with sports associations, clubs and other players in sports to ensure good conditions for athletes. The organization actively participates in debates and processes concerning the future of sport, and works to create a safe and fair sports environment. Through its activities, Niso seeks to strengthen the athletes' voice and highlight their needs and challenges.