The paper is devoted to anticompetitive practices regulation under the Regional trade agreements. The Author claims anticompetitivepractices to be an integrated concept, which could be applied to various similar in substance legal constructs grouped by signsof behavior, which results in competition harms (anticompetition practice; anticompetition bihavior; anticompetition conduct; anticompetitionbusiness conduct.)The aim of the Paper is determination of the main features of anticompetitive practices, it’s concept and general tendencies it’sdevelopment in different regions.It is stated that different approaches in competition regulation (which are applicable in different regions due to differencesbetween historical features of legal development) results in differences in concept and level of detail under anticompetitive practicesconstruction. The most common tendency of anticompetitive practices regulations, inherent to all RTAs groups could be qualified asdeclaration of its prohibition. The Authors concludes that the detail level of anticompetitive practices regulations is largely depends ondevelopment of national competition law and rules on such practices in those countries, which are the parties of relevant RTAs.It is stated, that the European approach for the regulation of anticompetitive practices is more stringent, than RTAs, influencedby NAFTA because of general tendency of of unification and harmonization of European Law. Thus, the European approach deals withreglamentation and definition of anticompetitive practices so as detalization of specific obligations of States-participants of relevantRTAs. However, the approach of RTAs inspired by NAFTA deal with numerous blanket rules. The Author called attention for conceptof anticompetitive practices under the CARICOM because of casuistic development of competition rules, which resulted in a specificchecklist of anticompetitive practices and its content.