Nomenclature is a system of names or terms or the rules for forming these terms in a particular field of arts or sciences. It has a far-reaching impact on the mind. It also defines the status of positions. Therefore changes in librarians’ professional identity as a result of increased use of new technology in the performance of their routine chores seem, however, inevitable. Such application generates changes in the context of their work and ultimately necessitates changes in professional identity.This article explored various changing roles of the librarian in this digital age. It also identified the nomenclatures professional librarians in Imo State would prefer to be identified with and also gave some reasons they would favor such nomenclature. Descriptive survey research method was employed to investigate a total population of 68 professional librarians in Imo State. The structured questionnaire was used to collect data for the research out of which 57 representing 83.8% were duly filled and returned for analysis. Findings revealed that professional librarians in Imo State would want a change in nomenclature. The study also identified some of the nomenclatures they would prefer. It discovered that librarian, Information manager, information scientist and information professional are some of the nomenclatures they prefer. Finally, they gave reasons on why they prefer such nomenclatures.