While terrorism has moved into the spotlight of criminological study, including critical criminology, it has yet to be thoroughly explored from a left realist perspective. Left realism addresses four aspects of crime: causes of offending, impact on the victims, and both official and public responses to crime. A left realist approach to terrorism would argue that similar to those who engage in street crimes, many terrorists are socially or economically disenfranchised young men who become involved in terrorism through connections with similarly situated members of the fringe population, and "get tough" policies on terrorism will backfire. Four propositions of left realist theory organized by DeKeseredy and colleagues are presented and addressed through the extant literature, which offers partial support for a left realist explanation of terrorism.Terrorism has been explored through a variety of perspectives. A large portion of the literature examining causes of terrorist activity tends to be psychological [see 18,33] or sociological [e.g., 2], with criminologists recently attempting to explain terrorist activity. For example, Hamm and Van de Voorde applied criminological theoriesspecifically social learning and opportunity theories-to terrorist involvement in transnational crime [30]. While criminology has much to offer the study of terrorism, lacking from the literature is an assessment of the left realist framework to understand terrorism (but see Taylor for an examination of terrorism through a critical criminological perspective) [60]. This paper explores terrorism through the left realist perspective. The next section reviews left realist theory, followed by a review of terrorism and the applicability of