The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) is the intergovernmental body which assesses the state of biodiversity and of the ecosystem services it provides to society, in response to requests from decision makers. To this end, it produces regular regional, national and global assessment reports in collaborations with many experts, scientists and politicians from a wide range of expertise, nationalities and backgrounds. To our knowledge, there is no existing ontology for representation of intergovernmental reports and the broad topics and information that they cover. To this end, we have created the IPBES ontology as the stepping stone for representing these types of data as LOD and make them accessible for further exploration.