Chronic Obstructive Pulmonary Disease (COPD)is a significant cause of disability. The purpose of this paper is to present our work in the development of an ontologically based patient COPD self-management web technology. In Phase I we conducted a ethnographic study to learn about the information needs of COPD patients. In Phase II an ontology of patient information needs was developed to guide the organization and development of a Web-based self-management management tool. Phase III of this work involves completing the development of the Web-based tool using the ontology developed in Phase II.