These Guidelines are designed to share good practice with State and non-State actors on the implementation of effective reparations in post-conflict situations, with the aim of overcoming common challenges identified in extensive research and fieldwork conducted in several societies affected by armed conflict. The Guidelines are based on interviews with over 250 individuals across seven countries: Colombia, Guatemala, Nepal, Northern Ireland, Peru, South Sudan and Uganda. Respondents included victims, ex-fighters, government officials, policy makers, civil society actors, experts and donors. Three workshops were held in Bogota, Geneva and New York alongside an expert roundtable to extrapolate best practices and lessons learned. These Guidelines reflect the findings of a five-year project, ‘Reparations, Responsibility and Victimhood in Transitional Societies’, funded by the United Kingdom’s Arts and Humanities Research Council and in partnership with Redress and our collaborating organisations the International Centre for Transitional Justice and the International Organisation for Migration.