Sport for Health aims to reduce the burden of non-communicable disease in Tonga. The project has two connected activities: strengthening the capacity of the Tonga Netball Association (TNA) to increase opportunities for Tongans, especially girls and women, to participate in quality sport activities, and a targeted Sport for Health intervention, harnessing the improved capacity of TNA to develop a programme focused on women and girls. The Sport for Health intervention uses a social marketing approach: target a specific audience, develop specific health-related behavioural objectives for that audience, take a holistic approach to engendering behaviour change, and conduct a baseline and measure the target group’s progress. Through the programme, sport is being used to support health in mobilising women and girls to engage in healthy behaviours, as a setting to educate women and girls about health-related behaviours, and as a means to empower girls and women to take the lead in improving health behaviours in their communities. The 42nd Pacific Island Forum declared NCD as a crisis and called for a holistic government approach.