This appendix provides an inventory of the existing Intended Nationally Determined Contributions (INDCs) and ratified National Determined Contributions (NDCs) submitted to the United Nations Framework Convention on Climate Change (UNFCCC) that include coastal blue carbon ecosystems, namely mangroves, tidal saltmarshes and seagrasses, as climate mitigation or adaptation solutions. This document serves as the appendix to ‘Coastal blue carbon ecosystems. Opportunities for Nationally Determined Contributions’, which provides additional information and analysis, available from: www.iucn.org/resources/publications. For the time being, if a country does not submit an NDC when the country ratifies the Paris Agreement, any INDC submitted by that country prior to ratification will automatically count as its first NDC. In this appendix, the term NDC is used to refer to both NDCs and INDCs. This inventory and the corresponding report provide a tool for countries to include or enhance actions for blue carbon ecosystems in future NDCs.