摘要:The article studies stages in formation of the institute of arbitration agreement in legal systems of ancient states and post-ancient civilizations, and their influence on the present-day development of this institution. The author analyzes approaches of ancient lawyers to solving problems that emerged on the way of legitimating the institute of arbitration agreement, runs parallels with modern approaches in this field, noticing the actual reception of a part of them into the modern legislation. The article brings to light priority legislative accents of the studied period in evolution of the institute of arbitration agreement, determined by historical social and economic realities; besides, the research results in the list of reasons for existence and intensification of development of the institute of arbitration agreement determined objectively by the historical development of the state and the law as established by the author.