Citizens’ trust in public institutions is strongly influenced by how these institutions perform in terms of competence and values, and it is a vital public policy outcome. While it is just a perception, its implications for policy are fundamental and multiple. Since the onset of the 2008 global financial crisis and resulting recession, trust has come to the forefront of the public debate in many OECD countries. While there is clear evidence that trust influences the relationship between citizens and governments, and has, in turn, an impact on the outcomes of public policy, there remains relatively limited comparative international or specific country experience with measuring the drivers of institutional trust.