This report provides a comprehensive global assessment of climate change’s consequences for the growing extreme wildfire risk. It discusses the environmental, social and economic impacts of extreme wildfires and presents emerging country approaches to adapt policies and practices to deal with the growing wildfire risk. As extreme wildfires have demonstrated the limits of wildfire suppression efforts, there is growing recognition of the need to refocus policy efforts on climate change adaptation. Containing future wildfire losses and damages will require integrating preventative actions through a whole-of-government effort. This report provides OECD insights for policy makers and practitioners to help make that happen.