Abstract: The relevance and scientific significance of this article is due to the lack of a comprehensive publication on the archaeological study of one of the densely populated areas of Sakha Republic (Yakutia) – Megino-Kangalassky ulus (district). The purpose of the study is to systematize the collected data on archaeological sites found in the territory of the study area. The subject of the study is the spatial representation of archaeological sites of Megino-Kangalassky district. The study area is characterized by a smaller area and high population density relative to other districts of Central Yakutia. Active economic development of the area leads to an increase in the number of risk factors for the preservation of archaeological objects. The study was carried out using GIS-technologies, which allowed to carry out spatial analysis of the identified 87 archaeological sites and identify patterns in their study and distribution. The scientific novelty of the study consists in the creation of a database on archaeological sites of the study area and the development of a series of maps on its basis. It has been established that there are objects covering practically all epochs, starting from the Upper Paleolithic and ending with settlements of the 19th century. Ancient archaeological sites are represented by temporary sites and burials of taiga tribes of hunters and fishermen, the Middle Ages by settlements and burials of early cattle breeders, and later periods by Yakut burials, burial grounds and settlements. The authors propose to use the results of the work to ensure continuous updating of geodatabases and monitoring of archaeological monuments located both on the territory of Megino-Kangalassky district and on the territory of Sakha Republic of (Yakutia).