Meeting the challenges of climate change in cities will increasingly require engaging with the issue of urban informality. More than a billion urban dwellers are estimated to live in what are often termed informal settlements; while a high proportion of the economically active population in urban areas of the Global South work in what is termed the ‘informal economy’. Residents of informal settlements face high levels of climate-related risk as a result of poor quality buildings and occupying land that is exposed to a range of hazards, and achieving low carbon urban development will require meaningful engagement with informal sector livelihoods. All of these strategies will need to be built on an inclusive view of the city, in which both the process of participation in setting agendas and priorities, and the equity of the outcomes of these processes will be critical. The papers in this session examine the political economy of vulnerability and resilience in informal settlements in Africa, South Asia and the Pacific Islands. They explore the multiple dimensions of social marginalization and how these shape risk, and describe approaches emerging strategies that are being taken to foster greater inclusion in responding to climate change.