This chapter presents Article 19 of the CoE Convention against Trafficking, which deals with the criminalisation of the use of services of a victim. This provision requires Parties to consider criminalising, through legislation or other measures, the use of services, which are the ‘object of exploitation’ as defined by Article 4(a) of the CoE Convention against Trafficking. The chapter begins with a short introduction, generally providing an overview of the main issues covered by the chapter. It then reviews the drafting history or preparatory work of the provision; provides a comparative analysis of this provision in the context of other international or regional legal instruments focused on human trafficking; and finally discusses issues of interpretation. The chapter closes with a conclusion.