The paper looks at the place of the University Librarian in the administration of the university. It identifies the roles the Librarian should play and the relationships expected of him with key officers and organs so as to ensure that the library provides the required support aimed at achieving the desired mandate of the university. It is important for the Librarian to understand that due to the growing complexity and sophistication of the society, the university must similarly respond by producing the highest skilled manpower, lead the way in innovations, attract international talents and business investments, be an agent for social justice and mobility, offer partnership for social and cultural vitality, among others. It is the duty of the library to provide the university community with the information required to achieve these directions. The Librarian must therefore effectively coordinate the professional, administrative and academic activities of the library in terms of collection management, organization, preservation and dissemination of information resources and services, as well as strategic planning, budgeting, academic guidance and mentorship for the library to succeed in its mandate. Additionally, he must effectively play the secondary roles in the membership of statutory and ad-hoc committees, though not at the detriment of his primary constituency. In carrying out both the primary and secondary responsibilities, the librarian must relate well with key officers such as the Vice-Chancellor, fellow principal officers and other stakeholders, to attain the desired support for the library to be successful in attaining its mandate.