History of Science and Engineering Annotation << Back Transformation of Traditional Circassian Nayezdnichestvas and Abrechestva Institutes From XVIII to the 30th of the XX Century Mirzoev A.S. Article is devoted to studying of such traditional Circassian institutes, as a nayezdnichestvo and an abrechestvo, and their transformations during historical development. Being initially different institutes on the origin and functional features, during a certain historical period they began to be identified in national consciousness. Having arisen during an era of decomposition of the rodoplemenny relations, in the Caucasus these institutes, having passed transformations during a feudal era and during the colonial period, lived up to the beginning of the 30th of the XX century – the period of the Soviet modernization. Keywords: Public institutes; nayezdnichestvo; abrechestvo; transformation; institutes of maintenance of the military mobility; traditional values; religious ideology. Contacts: E-mail: marzeibach@mail.ru Pp. 53-60.