Gelderse Sport Federatie (GSF) is a Dutch non-profit sports organisation based in Arnhem, Gelderland, dedicated to strengthening sport and physical activity throughout the province of Gelderland. The organisation describes itself as a “spelmaker” for sport and physical activity, working to motivate as many people as possible to participate in sport and movement so that everyone can take part. It connects, activates and coaches organisations and local partners across Gelderland, helping develop a strong, accessible and sustainable sporting environment. GSF works across several programme areas, including sport and physical activity for everyone, healthy living through sport and exercise, lifelong movement, and club development. Its activities include supporting sports clubs, developing local sports networks, strengthening volunteering, supporting municipalities and creating opportunities for people who face barriers to participation. The organisation works in cooperation with municipalities, sports organisations, educational institutions and other social partners. A substantial part of GSF's workforce operates within local sport and exercise teams. Its official organisation page states that more than 75 people work within the GSF organisation, including approximately 50 people working as community sports coaches or exercise coordinators in Gelderland municipalities. GSF is also involved in provincial initiatives such as the Jeugdfonds Sport & Cultuur Gelderland, where it functions as the provincial project team, and in projects designed to promote participation, inclusion and healthier lifestyles through sport. The organisation has a long history in Gelderland's sports sector. Business-registration information identifies the Gelderse Sport Federatie under Chamber of Commerce number 40123554, with an establishment date of 3 June 1987. A separate Stichting Gelderse Sport Federatie entity is recorded from 2001, reflecting changes in the organisation's legal structure over time. GSF's current headquarters are at Papendallaan 7 in Arnhem, close to the Papendal national sports environment. It maintains partnerships throughout Gelderland and provides expertise, programmes and practical support intended to strengthen participation in sport and physical activity across the province.