Abstract Frontex is the EU agency in charge of managing the external borders of the European Union. Its budget and tasks have expanded dramatically since it was founded in 2004. Academic attention for Frontex has likewise increased. This article provides an overview of the existing literature on Frontex. In total, 72 articles were selected and analysed. Five dominant themes of research emerged from this review: Frontex’ activities, the agency’s characteristics, its operational effects, the issue of human rights and its position in the EU bureaucracy. Recurring debates and relevant findings in these research strands are reported. In the final section, a research agenda with recommendations for future studies is formulated.