Transitional justice seeks to address the destructive and painful legacies ofmass violence and human rights violations. It involves mechanisms and processes such as truth-telling, criminal prosecutions, reparations, memorialisation, traditional justice, cultural interventions, vetting and institutional reform. The application of transitional justice is often more effective with a combination of mechanisms, to enable greater innovation and a comprehensive approach that evolves over time.This guide provides an overview of the field of transitional justice. It discusses key mechanisms, relevant factors to consider when working in transitional justice, and topics of growing interest to scholars, practitioners, local actors and communities.