Abstract: This research work deals with the use of ontologies for knowledge management and the application of technology within an organization. Knowledge management has immense value to the organisation activities. It is well known that knowledge has an immense value in all kinds of businesses and people everyday life. The work presented in this dissertation aims to make a stronger connection between knowledge management and organizations. The approach taken is to use ontology based knowledge management. The study tries to propose technologies that support knowledge management activities within an organisation. In order to achieve thi, objective, the use of ontologies for knowledge management plays very important role in different ways.