The ubiquitous collection, use and sharing of data that power today’s economies challenge existing governance frameworks and policy approaches. Drawing on the extensive research and analysis by the OECD on data governance, and the OECD legal instruments in this area, this Going Digital Guide to Data Governance Policy Making (hereafter the Guide) aims to help policy makers navigate three fundamental policy tensions and objectives that characterise most, if not all, efforts to develop, revise and implement policies for data governance in the digital age. The tensions and objectives relate to balancing data openness and control, while maximising trust; managing overlapping and potentially conflicting interests and regulations related to data governance; and incentivising investments in data and their effective re-use. For each, the Guide outlines underlying issues and presents promising approaches that can help address them. The Guide also contains a checklist of questions to orient policy makers as they develop and revise effective policies for data governance. Finally, it includes a number of policy approaches and real-life policies as examples.