This paper provides the first assessment of the landscape of public international funding for nature-based solutions for climate adaptation, covering both climate finance and Official Development Assistance (ODA). It seeks to help donor countries, multilateral institutions, and developing countries better understand the current state of funding, and provides recommendations to address barriers that are hindering public donor funding support for nature-based solutions for adaptation. This paper shows that the amount of public international funding flowing to nature-based solutions (NbS) for adaptation in developing countries is still relatively small.