This working paper explores the role of data governance in advancing people-centred justice systems. It outlines the objectives, values, and practices necessary to harness data effectively, drawing on OECD policy instruments. The paper provides actionable insights for policymakers aiming to implement data-driven justice reforms. It also addresses the challenges and opportunities presented by digital transformation in the justice sector, advocating for a strategic approach that balances innovation with the protection of fundamental rights. It incorporates lessons from data governance activities and experiences in justice and other relevant sectors. This paper is essential reading for those involved in modernisation of justice and data governance.