Global and regional initiatives supporting adaptation or climate resilience in urban settlements offer national and subnational governments five opportunities for action on adaptation to climate change: learning, accessing technical support, committing to action, financing, and uniting with a wide variety of stakeholders for climate-resilient urban development. This document provides concise descriptions of such global and regional initiatives and groups them according to these five opportunities for adaptation action. The findings in this document draw on a literature review and inputs from partners of the Nairobi work programme on impacts, vulnerability and adaptation. The initiatives are listed in the annex and are also available via the adaptation knowledge portal.