The 2008 economic crisis brought an increasing support for some European radical left parties (RLPs) and renewed academic attention to this party family. This article retrospectively assesses the literature on RLPs by conducting a scoping review under the following research question: How have European radical left parties been studied since the fall of the Berlin Wall (1989)? Using an adapted version of the PRISMA framework, it analyzes 197 articles published between 1990 and 2019 to show that, despite the growing scholarship, significant gaps persist in the literature. Important aspects of RLPs have yet to be explored (e.g. party organization, policy impact), while uneven geographic coverage has left some relevant countries and parties in the background. By providing an overview of the field, it identifies new avenues for future research on the topic and shows how scoping reviews can be a method of interest also for political scientists.