This article explores a framework for cooperation between Russia and India in the peaceful uses of nuclear energy with a view to providing a comprehensive analysis of the international legal acts in this field. The scientific novelty of the research is a reflection of the fact that it is the study in which international legal framework concerning cooperation between Russia and India in the field of nuclear energy are summarized, systematized and analyzed. It is mentioned that the Moscow-New Delhi relationship is based upon mutual needs: Indian energy needs and Russian strategic economic needs. The main agreements for cooperation in the field of peaceful uses of nuclear energy are the Kudankulam nuclear agreement (1988) and the intergovernmental agreement on cooperation in the uses of atomic energy for peaceful purposes (2010). The legal acts on cooperation in the construction of additional nuclear power plant units at Kudankulam site are of special importance. The article finds, moreover, that the increasing of the number of reactors in the Kudankulam Nuclear Power Plant has been expanding the India-Russian long-term partnership. India continues to view the expansion of its civilian nuclear sector as a critical element in the field of industry and decarbonization. In this regard, developing alternate nuclear fuel resources and civil nuclear cooperation agreements between Russia and India should be concluded.