The DCAT-AP Norway Profile extension implements the Norwegian application profile of the Data Catalog Vocabulary (DCAT-AP.no), ensuring full compliance with Norwegian open data standards and enabling seamless interoperability with Norway’s national data infrastructure including the national data catalog and government data sharing initiatives. This specialized extension provides comprehensive metadata mapping from CKAN’s internal schema to Norwegian DCAT-AP specifications, supporting all required and recommended metadata fields as defined by Norwegian open data guidelines and European DCAT-AP standards. The system automatically generates compliant RDF/XML, Turtle, and JSON-LD serializations with proper namespace handling and vocabulary alignment for maximum compatibility with Norwegian data infrastructure. Advanced features include automatic metadata validation against Norwegian DCAT-AP constraints, quality scoring based on Norwegian open data criteria, and integration with Norwegian controlled vocabularies and classification systems. The extension supports specialized Norwegian metadata requirements including administrative level classifications, Norwegian geographic references, and compliance with Norwegian data protection and accessibility regulations. Administrative tools provide metadata quality assessment, compliance reporting specific to Norwegian standards, and batch metadata transformation for existing datasets. Integration capabilities include automatic synchronization with Norwegian national data catalogs, support for Norwegian administrative vocabularies, and compliance with technical standards mandated by Norwegian government agencies. The system supports Norwegian language localization, cultural adaptations for Norwegian administrative structures, and integration with Norwegian e-government services and digital infrastructure. Performance optimizations ensure efficient metadata processing and validation for large-scale Norwegian government data operations. Essential for Norwegian public sector organizations publishing open data, compliance with national Norwegian data strategies, integration with Norwegian government data sharing platforms, and organizations requiring adherence to Norwegian-specific metadata standards for legal, technical, or policy compliance in the Norwegian open government data ecosystem.