Presently, many museums have developed their own multimedia information systems to store the artifacts and other objects of scientific, artistic, cultural or historical interest into the digital resources and make them available for public viewing on the Web. However, searching for the multimedia information is still not relevant to the user requirement, and the system does not provide meaningful information. This research work proposes the personalized multimedia integration system for museums based on ontology which is a core component of the Semantic Web technology. The multimedia information for each resource has been expressed in the Web Ontology Language (OWL). The research also resolved the problem of information integration by proposing the ontology mapping technique to cope with the semantic conflicts and structural conflicts via the OWL properties. Then the ontology storing users’ interest was designed which matched the museum’s ontology so that retrieval of multimedia information is meaningful and direct to the users’ needs