In the course of educational expansion, student populations have become more diverse. This paper represents an international literature review on the topic of first-generation students (FGS), i.e. students whose parents have not obtained a higher education qualification. On the basis of more than 70 research articles and reports on FGS from several countries, we find that the focal points in FGS research concern their pre-college characteristics, mobility factors, decisions about institution, degree and subjects, FGS' experiences at university, and academic outcomes. Summarising the state of research on these topics, we point to two problems: (1) the international incommensurability of data on FGS due to differences in how FGS are defined and researched; (2) the depiction of FGS' problems as individual rather than structural problems. We recommend that structural changes such as making organisational structures in higher education institutions more transparent are in order instead of offering special support programmes only for FGS.