This article synthesizes and compares environmental governance theories. For each theory we outline its main tenets, claims, origin, and supporting literature. We then group the theories into focused versus combinatory frameworks for comparison. The analysis resonates with many types of ecosystems; however, to make it more tangible, we focus on coastal systems. First, we characterize coastal governance challenges and then later link salient research questions arising from these challenges to the theories that may be useful in answering them. Our discussion emphasizes the usefulness of having a diverse theoretical toolbox, and we argue that if governance analysts are more broadly informed about the theories available, they may more easily en...