Transitional Justice Working Group is a Seoul-based non-governmental organization (NGO) founded by human rights advocates and researchers from five countries in 2014. It is the first Korea-based NGO focused on transitional justice mechanisms in the world’s most repressive regimes, including North Korea. We aim to develop practical methods for addressing massive human rights violations and advocating justice for victims in pre- and post-transition societies. We collaborate and share our practice with other organisations and individuals concerned with the pursuit of accountability for mass atrocities and human rights abuses. TJWG is a non-religious and non-partisan entity registered as a non-profit organization in Seoul under Article 13(2) of the Basic Law for National Taxes of Korea on October 2, 2014.