This paper examined the administrative concerns in the implementation of sustainable library services for national development in Nigeria. As an emerging issue, the paper critically examined the library administrator's roles in the implementation of library services to users towards the development of the individual and the country at large. The paper however concluded that the library administrator should be professionally positioned for the vital role in the provision, management and maintenance of library services in Nigerian libraries. The importance of library and library services in the quality of education, the development of the individual and the society at large can not be understated. To this end, Fadero (2001) argued that there was apparently no further need to debate the importance of libraries in any national system of education because the issue seems to have been over flogged by experts in both librarianship and educational planning.