The author examines the role of various institutions and countries in the transformation of the world order in East Asia during the period of the late XX – early XXI centuries. The work notes that at the end of the XX century, the American model of the regionalization process, carried out within the framework of Asia-Pacific Economic Cooperation (APEC), dominated. However, due to the changes in the US foreign policy doctrine and the Asian economic crisis of 1997–1998, APEC, in the early 2000s, began to give way to ASEAN+, where Japan occupied the leading position. Since the mid-2000s, China has been strengthening due to successfully carried out economic reforms and the use of various integration platforms. As a result, China began to promote its own model of globalization and regionalization in the region, which challenged the American order not only in East Asia, but also in the Asia-Pacific region. In the late 2000s, Washington sought to regain lost positions in the region by promoting the Trans-Pacific Partnership integration project, which intensified the struggle between the leading powers for dominance in the region. As a result, in the 2010s. ASEAN+ and Japan are developing the Regional Comprehensive Economic Partnership (RCEP) project, China is beginning to promote the Belt and Road international cooperation organization. As a result of the transformation of international relations caused by the movement of the world from unipolar to multipolar, there is a change in the transformation of the geopolitical situation in East Asia. The United States returned to the «traditional» methods of confrontation, increasing tension in the region and the world