Abstract. Attitudes toward intimate partner violence against women (IPVAW) are increasingly recognized as central to understanding of this major social and public health problem, and guide the development of more effective prevention efforts. However, to date this area of research is underdeveloped in western societies, and in particular in the EU. The present study aims to provide a systematic review of quantitative studies addressing attitudes toward IPVAW conducted in the EU. The review was conducted through Web of Science, PsychINFO, Medline, EMBASE, PUBMED, and the Cochrane Library, in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) recommendations. This review aimed to identify empirical studies conducted in the EU, published in English in peer-reviewed journals from 2000 to 2018, and analyzing attitudes toward IPVAW. A total of 62 of 176 eligible articles were selected according to inclusion criteria. Four sets of attitudes toward IPVAW were identified as the main focus of the studies: legitimation, acceptability, attitudes toward intervention, and perceived severity. Four main research themes regarding attitudes toward IPVAW emerged: correlates of attitudes, attitudes as predictors, validation of scales, and attitude change interventions. Although interest in this research area has been growing in recent years, the systematic review revealed important gaps in current knowledge on attitudes toward IPVAW in the EU that limits its potential to inform public policy. The review outlines directions for future study and suggests that to better inform policy making, these future research efforts would benefit from an EU-level perspective.