This paper explores issues related to the M&E of anti-trafficking re/integration programmes and, as such, aims to contribute to the body of knowledge on this subject. It is the third in a series of issue-based papers focusing on the re/integration of trafficked persons, developed in the context of the King Baudouin Foundation (KBF) Trafficking Victims Re/integration Programmes (TVRP) in South-eastern Europe (SEE). Recommendations include: • Make M&E an essential component of all re/integration work; • Monitor not only the re/integration plans of individual victims but also re/ integration services themselves; • Regularly conduct evaluations of re/integration programmes – before, during and after programme implementation; • Use both qualitative and quantitative information in monitoring and evaluating re/integration work; • Involve beneficiaries in monitoring and evaluating re/integration services and programmes; • Follow ethical principles in M&E work; • Make M&E a “safe” and comfortable process for staff and beneficiaries; • Balance the costs and benefits in undertaking M&E work; • Train staff in M&E, including recognising its value in programme work; • Apply the lessons from M&E in on-going re/integration efforts in order to bring about positive change; and • Fund and undertake both M&E and research.