Effective and efficient publishing and searching for UDDI(Universal Description, Discovery and Integration) Web services is of vital importance for the success of Web services. Traditional approaches such as index, thesaurus, and classification have historically played a role in representing and organizing information; however there are some limitations. An ontology-driven knowledge organization is the key to the next generation of knowledge management applications, because ontology provides structure and meaning to data and better mechanism in disambiguating concepts employing description logic and class hierarchy and inheritance capability, which results in making valuable knowledge readily available. This research examines how ontology-driven knowledge organization would benefit UDDI Web service. Particular attention is given to how topic maps, an ISO standard ontology language, can be utilized in enhancing current UDDI directory service.