This report details year 1 findings from an ARC Linkage Funded Project examining Informal Sport Participation. The report illustrates the need for the sport sector to broaden support for sport participation to more readily include informal forms of participation. The research findings suggest that the informal sport sector represents a critical opportunity in efforts to grow and sustain sport participation within communities and ensure the well-established physical, mental and social benefits that sport participation can provide are accessible to a larger proportion of the population.