In this article, the role of the data curator is defined as “selecting useful data from the data produced by research, distributing them as FAIR data (Findable, Accessible, Interoperable, and Reusable data) so that they can be reused by third parties, and manage and preserve them for the long-term”. It also described the relationship between data curators, RDM services, and data librarians. Based on “Curating Research Data,” published by the Association of College and Research Libraries, the details of practices along the life cycle of data curation were presented. Considering the current situation in Japan, the author proposed that the data curation be divided among (1) subject specialists, (2) librarians, and (3) information technology specialists was proposed, and discussed the human resource development.