Policymakers worldwide set ambitious targets to increase the share of organic farming. We conduct a global, systematic literature review to synthesise evidence on the adoption of organic farming and support policymakers and food-value chain actors in reaching policy goals. First, we map the existing research and identify substantial gaps regarding the research focus, methodology and geographical coverage. Second, using a conceptual framework of the farmers’ adoption process, we provide an overview of evidence-based recommendations to scale organic adoption. Finally, using regression analysis, we show that especially the organic market maturity and the level of agricultural productivity matter for the type of recommended measures.