DI Yogyakarta Province has a development priority, namely to make Yogyakarta a leading cultural-based education center in Southeast Asia by 2025. To achieve this, the library is an important element in the process. DI Yogyakarta Provincial Library and Archives Service has a responsibility to develop libraries in its territory, one of which is to make the libraries under construction in accordance with national library standards. To find out that the library is in accordance with national standards, it is necessary to hold library accreditation activities. The success of library accreditation activities cannot be separated from the role of the librarian of the DI Yogyakarta Regional Library and Archives Service.