The people most impacted by criminal justice policies and practices are seldom included in the decision-making processes that affect their lives. Building on the ‘nothing about us without us’ social movement, this edited volume advocates an inclusive approach to criminology that gives voice to historically marginalized, silenced, and ignored groups. Incorporating the experiences of service users, academics, and state and grassroots practitioners, this volume considers how researchers might bridge the gap between theory and lived experience. It furthers criminological scholarship by capturing the voices of marginalized groups and exploring how criminology can authentically incorporate these voices.