The sustainable development for the economic and global-environmental balance has required organizations to manage, control and report sustainability data. To do so, a diversity of indices was proposed, which has caused low interoperability among information systems and also difficulty the exchange of information and experiences among organizations which adopt different methodologies for sustainability data representation and manipulation. This work presents domain ontology for the representation of a common knowledge base between the Corporate Sustainability Index (ISE), one of the most used sustainability index in Brazil, and G4 Guidelines of the Global Reporting Initiative, adopted internationally. The development of the existing semantic structure between these two indexes can provide the availability of information in a fast and consistent way, independent of methodologies or computational difficulties faced by stakeholders using heterogeneous software.