This report provides a synthetic view of national risk assessments (NRAs) in twenty OECD Member countries. NRA are used to support risk management decisions in a rapidly changing global risk landscape characterized by increasingly complex, interconnected societies and highly mobile people, information and goods. The report highlights good governance practices in establishing NRAs and how the results are used to inform public policy. It identifies challenges that OECD Member countries continue to confront in their efforts to implement NRA, and makes concrete recommendations where improvements could still be made.