Coordinated, well-functioning institutions are crucial for tackling environmental challenges like climate change, pollution, biodiversity loss, and resource overuse.This book presents case studies from around the world to showcase how different socio-political institutions interact to influence environmental management outcomes in complex, polycentric institutional settings.Collectively, the cases emphasize the importance of unpacking interactional complexity through an improved understanding of cross-scalar, cross-cultural, and cross-functional institutional interactions.By encouraging practitioners to reflect on these three dimensions, this book identifies key considerations for designing innovative institutional coordination mechanisms in support of sustainable environmental management.