How to progress climate science to be policy-relevant and actionable? This book presents a novel framework to give a positive vision and structuring approach to guide research and practice on transformative climate governance, to shift the narrative from apathy and stalemate to action and transformation. Our vision contrasts existing climate governance and associated lock-ins that signify the institutional resistance to change. To effectively address climate change, climate governance itself needs to be transformed to foster sustainability transitions  under  climate change. The book brings together a collection of case studies to investigate how capacities for transformative climate governance are developing at multiple scales and how they can be strengthened vis-à-vis existing governance regimes. Specifically, it sheds light on the following questions: What are key overarching conditions, actors and activities that facilitate governance fortransformation under climate change? Given persistent climate governance lock-ins, what needs to happen in research and policy to build-up the capacities that transform climate governance and ensure effective climate action?