In this presentation to the 'Joint Program on Gender Transformative Approaches to Food Security & Nutrition, Inception Workshop' (Rome, May 6-8, 2019), Dr Cynthia McDougall outlines some key ideas to guide measuring gender transformative change. This draws on WorldFish (AAS and FISH's) and partners work in this area, including leading up to the development of the Women's Empowerment in Fisheries Index.