Radicalization has emerged as a significant societal threat, attracting increased research attention, particularly in the aftermath of the terrorist attacks in the United States and Europe during the early 2000s. Social Identity Theory (SIT), a well-established framework used to explain (inter)group processes, has gained attraction among professionals seeking to decipher the role of social identity in the radicalization process. However, the literature lacks a comprehensive review of the makeup of such a transdisciplinary field. This paper comprehensively examines the intellectual structure, development, and emerging trends in SIT and radicalization research. This is achieved through three studies leveraging VOSviewer to conduct bibliographic coupling (Studies 1 and 2) and keyword co-occurrence analyses (Study 3) of 2,990 articles from the Web of Science database, spanning from 1970 to 2022. The findings offer an overview of the field, shedding light on influential literature and conversations, intellectual networks of countries and institutions, and provide insights on emerging areas for future research to comprehend this dynamic field. Revealing “prevention” as a trending topic within SIT and radicalization research, this paper emphasizes the contemporary efforts not only to study the foundations of this social phenomenon but also to pragmatically apply such insights to the Prevention of Violent Extremism (PVE). This bibliometric analysis offers a comprehensive synthesis of knowledge essential for informed PVE interventions.