ABSTRACTUrbanisation trends and global environmental change are two of the most critical modern-day stressors threatening the resilience of cities around the world. This paper focuses on Honiara, the capital city of the Solomon Islands, which is experiencing rapid urbanisation and a resultant spread of informal settlements. Similar to other primary cities in the South Pacific, the rate of urbanisation is severely testing the local government’s ability to respond to growing levels of informality; and increasing the climate vulnerability of residents. Based on recent urban climate resilience and land tenure research conducted for the United Nations Human Settlements Programme (UN-Habitat) and the Global Land Tool Network (GLTN) respectively, the paper analyses land issues in two informal settlements in Honiara to highlight the inter-linkages between security of land tenure and climate vulnerability, and how insecure land tenure adversely impacts local adaptive capacity and adaptation planning. This analysis is embedded in the context of the South Pacific region, where duality tensions exist between Western-influenced land tenure arrangements within cities - a legacy of colonial times - and customary arrangements that operate in the surrounding peri-urban and provincial areas. Given the identification of strong links between security of land tenure and climate vulnerability, and the complexity of property rights in the region, the paper argues that principles of good land governance are an essential component of climate resilience thinking and actions.