Fostering gender inclusion can have positive impacts on the food systems' triple challenge of ensuring food security and nutrition for a growing population, supporting the livelihoods of millions of people working in the food supply chain, and doing so in an environmentally sustainable way. Yet, these positive synergies are often invisible as sex-disaggregated information is not collected. This report calls for the development of better evidence on gender and food systems as a necessary first step in the path towards gender equality. Based on OECD countries' experiences, it provides a roadmap to identify and overcome evidence gaps on gender aspects and policies that address gender inequality in food systems with the aim of advancing women's contribution to food systems. Key messages from the report are: - A move towards greater gender equality requires applying a gender lens when developing and implementing policies related to food systems, as well as collecting better evidence on gender and food systems. - Across the OECD area, the contributions of women as entrepreneurs, workers and consumers across food systems are difficult to recognize because of the lack of sex-disaggregated data. This prevents policy makers from taking into account both women's and men's interests and concerns at all stages of policy processes. - Digital technologies and government-wide commitments can facilitate the information collection process. Regular reporting on the situation of women across food systems can raise awareness on their roles, on the barriers they face, and on progress achieved. - OECD countries tend to use a combination of policy instruments to support women across food systems. These instruments are either food systems specific ‒ in particular for those that focus on supporting women entrepreneurs in the primary sector ‒ or are economy-wide tools that can be applied to food systems. Developing better evidence on gender and food systems allows better targeting of policies supporting women in food systems and better measurement of their effectiveness.