The physical impacts of climate change - such as heatwaves, coastal inundation and drought - are already being felt and are projected to become increasingly severe. Increased public and private investment will be needed in activities that help to reduce harm or realise any potential opportunities due to the impacts of climate change ("adaptation investments"), such as the development of climate-resilient infrastructure, food systems and supply chains. The Climate Adaptation Investment Framework has been developed to help governments unlock increased investment in adaptation by strengthening their domestic policies. Building on the OECD's Policy Framework for Investment and Foreign Direct Investment Qualities Policy Toolkit, it provides non-prescriptive guidance covering critical policy areas for climate adaptation, as well as useful questions, examples of good practice and links to relevant resources.