The notion of sport policy is a relatively recent subject of study, but it has been frequently used over the last 20 years, particularly referring to governmental sport policies. However, less research has been conducted in the field of national sport federations (NSFs), which are key non-governmental structures in governing, organising and sustaining the development of sports. The objective of this article is to propose a conceptualisation of the notion of sport policy adapted to NSFs. The proposed approach consists of two steps: first, we conducted an extensive integrative literature review around the notion of sport policy. Second, based on the literature review, we developed a model that conceptualises what an NSF sport policy is. This conceptual model is intended to be a useful analytical tool to design, implement and assess the success of a sport policy for both researchers and practitioners working in the field of NSFs.