This review of Non-State Actors in International Law, edited by Math Noortmann, August Reinisch and Cedric Ryngaert (Hart Publishing, 2015), focuses on the constraints of state-centric approaches in accurately depicting the role and status of non-state actors in the international arena. As the book presents a comprehensive examination of the influence of diverse entities in a variety of fields, such limitations are evidenced and inevitably lead to the reassessment of novel theoretical standpoints, as well as to the recognition that a multidisciplinary approach is much needed in order to advance further studies on the issue.