Avhandlingens titel: Ontology and Knowledge Graph-Based Data Management for Sustainable Buildings: A Case of Digital Product Passport to Enable Circular Economy in the Built Environment Respondent: Rahel Kebede Forskarutbildningsämne: Maskinkonstruktion Opponent: Associate Professor Pieter Pauwels, Eindhoven University of Technology, Nederländerna Huvudhandledare: Associate Professor Peter Johansson, JTH, Jönköping University