History of Science and Engineering Annotation << Back Economic Integration of the Post-Soviet Space in 2000–2015 Mukhin M.Yu. The article focuses on the main stages of the formation of the economic integration system in the post-Soviet space in 2000–2015. The author comes to the conclusion that at the beginning of the 21st century, a unique situation arose that allowed one to expect the creation of a Single Economic Space of Russia, Ukraine, Kazakhstan and Belarus, which would lead to the formation of an economic alliance at least comparable in terms of economic potential to the USSR. Moreover, Ukraine would have received the greatest economic benefi t from the creation of the EEA. Unfortunately, Kyiv's short-sighted policy led to Ukraine's refusal to participate in the EEA. Nevertheless, painstaking work on harmonizing the norms and laws of the founding countries of the EEA made it possible to transfer the discussion of this project to the practical phase, and then to transform the EEA project into the Eurasian Economic Union (EAEU). Thus, the process of economic integration of the post-Soviet space, which began in the 1990s, was crowned with obvious success in 2015. Keywords: economic history, history of post-Soviet countries, economic integration, free trade zone, Customs Union, CIS, EurAsEC, Yalta agreements, EAEU. DOI: 10.25791/intstg.7.2025.1558 Pp. 17-29.