Economic historian and local historian Alexey Vasilyevich Kleyankin

Introduction. 2021 marks the 110th anniversary of the birth of one of the outstanding scientists of the Mordovia State University, doctor of historical sciences, professor A.V. Kleyankin. The purpose of the study is to evaluate his scientific contribution to the development of historical science and local lore of the Republic of Mordovia and the Volga region. Research methods. The research is based on the biographical method. The use of general scientific methods made it possible to present the problem under study as a process within the framework of a concrete historical situation, the tasks to be solved, and to analyze the essence and content of A. V. Kleyankin’s scientific and pedagogical activities. The article introduces the materials of the archives of Ogarev Mordovia State University and the Central State University of the Republic of Mordovia, and uses the documents of electronic resources. Results and Discussion. The article is dedicated to the memory of Professor Alexey Vasilyevich Kleyankin of Ogarev Mordovia State University. The study provides biographical information about the scientist, presents the scientific and educational activities of the scientist-historian, focuses on the main scientific works. Conclusion. The contribution of A.V. Kleyankin to the history of the region is significant and not forgotten. A. V. Kleyankin devoted his entire life to science. From 1971 until the last days of his life, he worked at the Mordovia State University, was listed in the Book of Honor of the Mordovia State University, was awarded a Certificate of Honor by the Ministry of Higher and Secondary Special Education of the RSFSR, and became an Honored Scientist of the Mordovian ASSR. His role as a researcher and representative of the school of economic history is important. A.V. Kleyankin is the author of dozens of works on the economic history of the Amur region, the Volga - Oka interfluve, and the Volga region.