This study examined the historical development of the University of Ibadan in Nigeria and its contributions to adult education both in Nigeria and in other African nations. This was aimed at providing up-to-date insight into the department's contributions to the development of adult education in Nigeria and in other African nations. Specifically, this study examined the department's founders and their goals, the department's management structure, its relationship with other adult education agencies in Nigeria and in Africa, its programs and services, and the participants in these. This study reveals that the department's founders were both British and Nigerian politicians, educators, and humanitarians. They were concerned with eradicating illiteracy, preparing adults for democratic roles, and improving the economic well-being of these adults. The department does not have a consistent pattern of management. The selection of its leadership is usually based on seniority and academic merits. The department initially relied on donations and on the revenues from the local, state, and federal governments of Nigeria to operate. It now relies on those from the profit from its services to the public and on those from Nigeria's state and federal governments. The department interacts with other departments of the university and with other adult education agencies in Nigeria to formulate, develop, direct, and provide adult education programs and services to all segments of the Nigerian population. Its contributions to other African nations are limited to the conferences and seminars it hosts, and in many cases, directs on their behalf.