In the last decade, the United Nations Framework Convention on Climate Change has moved from a strong focus on mitigation to increasingly address adaptation. Climate change is no longer simply about reducing emissions, but also about enabling countries to deal with its impacts. Yet, most studies of the climate regime have focused on the evolution of mitigation governance and overlooked the increasing number of adaptation-related decisions and initiatives. In this article, we identify the body of rules and commitments on adaptation and suggest that there are more attempts to govern adaptation than many mitigation-focused accounts of the international climate regime would suggest. We then ask: to what degree are adaptation rules and commitments legalized in the United Nations Framework Convention on Climate Change?