This study of the normative justification for the use of criminal sanctions as a means of cartel control goes beyond the historical and economic viewpoints by adding a normative evaluation of anti-cartel regimes and analysing cartel control in the USA, Europe and the UK. The analysis is unique in seeking to establish why, in a liberal society, criminal sanctions should apply to individuals who participate in this sort of activity. Although cartels have been rhetorically likened to theft and fraud, there are significant differences. Notwithstanding these differences, Cartels, Markets and Crime presents an argument for the criminalisation of economic collusion and, with this argument in mind, analyses the regimes of the USA, EU and UK and considers the possibility of global convergence.