The development of digitization and technology has brought new opportunities to produce and access research data. This has generated the need to be able to use and manage data. Data literacy has been listed as one of the great current trends in the library world as a result of new opportunities for spreading and managing data. The purpose of the present thesis has thus been to investigate librarians’ reflection on data literacy. Five librarians at a university library have been interviewed through semi-structured interviews. Interviewees view data literacy as a concept that is closely related to information literacy. Data literacy is said to be about saving, analyzing, citing and reusing data. At the university library, data literacy is viewed through both skills’ development and activities. Since the phenomenon is relatively new, the staff has been given the opportunity to develop skills through workshops in data analysis tools. In addition, the university library has opened two digital labs at two libraries that aim to contribute to creative learning environments for data management and data usage. The library has offered workshops in data analysis programs for users. Data literacy has not been fully implemented in the library’s teaching yet. One of the major challenges in implementing data literacy is to find time to develop skills but at the same time prioritize the library’s core functions. However, informants believe that data literacy will entail new roles for university libraries in the future and that it will affect more than just teaching librarians.