This survey, carried out by the REBIUN Open Access Subgroup on behalf of the Conference of Rectors for Spanish Universities (CRUE), was run past Spanish institutions in June/July 2018 and presented last October at the XVII REBIUN Workshop on Digital Projects in Seville. The presentation is only available in Spanish for the time being but will soon be available in English too. As described by Anna Guillaumet in Helsinki, the survey results show that 60% of Spanish universities in REBIUN run a CRIS, their main areas of application being the recording of research outputs and the management of researchers' CVs. While research libraries are involved in the CRIS management in approximately half the institutions that responded to the survey, it's institutional Research Offices who mostly deal with this area. In-house-built systems are by far the most frequent solutions. Interestingly, only 35% of the responses state that the CRIS interoperates with the institutional repository. This kind of detailed national-level surveys are expected to be the natural follow-up to the worldwide OCLC/euroCRIS survey on RIM practices whose far more general results have been regularly presented at various events this year.