Climate change is a major driver and pressure acting on marine biodiversity and is an increasingly critical management consideration for Marine Protected Areas (MPAs) and Other Effective Area-based Conservation Measures (OECMs). Many existing management effectiveness tools and assessments address climate change directly or indirectly by fostering management best practices that can support protected areas under a range of changing circumstances, including a changing climate. However, there is a lack of tools to help MPA practitioners consider in depth how climate change relates to MPA management and the importance of intentionally strengthening management practices in the face of the climate crisis. The Climate Change Resilience and Adaptation Planning Tool (CC-RAPT) for MPAs and Marine OECMs was developed by the International Union for Conservation of Nature (IUCN) World Commission on Protected Areas (WCPA) Climate Change Specialist Group to address that gap.