Human activities on land impact coastal-marine systems in the Lesser Antilles. Efforts to address these impacts are constrained by existing top-down and fragmented governance systems. Network governance may help to address land-sea interactions by promoting improved co-governance and land-sea integration. However, the conditions for, and processes of, transformations towards network governance in the region are poorly understood. We examine network governance emergence in four case studies from the Lesser Antilles: Antigua and Barbuda, Saint Kitts and Nevis, Saint Vincent and the Grenadines, and Grenada. We find that governance is currently in transition towards a more networked mode within all the cases. Our results suggest that participation in collaborative projects has played an important role in initiating transitions. Additionally, multilateral agreements, boundary-spanning organizations, and experience with extreme events provide enabling conditions for network governance. Successfully navigating the ongoing transitions towards improved network governance will require (1) facilitating the leadership of central actors and core teams in steering towards network governance and (2) finding ways to appropriately engage the latent capacity of communities and non-state actors in governance networks.