The Eurasian Economic Union (EAEU or EEU) is an economic union of states located primarily in northern Eurasia. A treaty aiming for the establishment of the EEU was signed on 29 May 2014 by the leaders of Belarus, Kazakhstan and Russia, and came into force on 1 January 2015. Treaties aiming for Armenia's and Kyrgyzstan's accession to the Eurasian Economic Union were signed on 9 October 2014 and 23 December, respectively. Armenia's accession treaty came into force on 2 January 2015. Kyrgyzstan's accession treaty came into effect on 6 August 2015. It participated in the EEU from the day of its establishment as an acceding state.

The Eurasian Economic Union has an integrated single market of 183 million people and a gross domestic product of over 4 trillion U.S. dollars (PPP). The EEU introduces the free movement of goods, capital, services and people and provides for common transport, agriculture and energy policies, with provisions for a single currency and greater integration in the future. The union operates through supranational and intergovernmental institutions. The Supreme Eurasian Economic Council is the "Supreme Body" of the Union, consisting of the Heads of the Member States. The other supranational institutions are the Eurasian Commission (the executive body), the Eurasian Intergovernmental Council and the Court of the EEU (the judicial body).