Previous research on the relationship between quality of government (QoG) and environmental sustainability is scant, scattered across different disciplines, and is characterized by a disconnect between studies focusing on the effects of QoG on the micro level (individual behavior) and micro level (country policies and actions). The chapter synthesizes the different literatures on the connection between various elements of QoG, such as low levels of corruption, bureaucratic capacity, and rule of law, on the one hand, and environmental sustainability on the other hand. On the macro level, it theorizes the role of QoG in securing governments’ production of environmental public goods. On the micro level, the chapter discusses how QoG can shape cooperation in collective action dilemmas over natural resource use, as well as how it contributes to generating public support of and compliance with environmental policies.