The focus of this article is on the organization of children's sport in Norway. More specifically, the paper sets out to examine (i) the changing pattern of relationships, and in particular the changing balance of conflict and cooperation, between the several organizations with responsibility for children's sport, and (ii) how sport for children is regulated in order to protect children against the dangers associated with competitive pressures, overspecialization and burnout. These questions are answered by tracing the key policy changes and initiatives in relation to children's sport. With reference to the organization of children's sport, the ideological struggles between schools and sport organizations over the nature and objectives of sport and physical activity are traced from the 1950s through to recent attempts to promote an Active Sports policy, which represent possible partnerships between several governmental ministries (culture, health and education), schools, and sport clubs. With reference to protecting children against competitive pressures and early overspecialization, the article traces the development from the first advisory guidelines for children's sporting participation through to mandatory regulations and finally to the recognition of children's rights in sport. (Contains 3 notes.)