Under the Pompidou Group’s (Council of Europe International Co-operation Group on Drugs and Addictions) project on ‘Developing comprehensive drug treatment systems in prisons’ (hereinafter: the Project) within its South-East Europe (SEE) cooperation group, the consultant Martina Baric (hereinafter: the consultant) was engaged to map the existing training resources and available research in SEE countries related to drug treatment and rehabilitation in prisons, as set out in GP/AE/2021/91/5. The consultant was tasked to compile the existing training resources and to identify gaps in terms of training and research material in SEE countries, for the use of prison staff dealing with people with substance use disorders (SUD).