The birth of the EU (European Union) and ASEAN (Association of Southeast Asian Nations) is nearly two decades apart but both organizations are strongly influenced by the bipolar world in the time of cold war. However, after more than 60 years of EU development, it is recognized by the world as the most successful regional, economic and political association. In contrast, ASEAN is initially established with 5 members: Thailand, Singapore, Malaysia, Indonesia, Philippines with the first motive of cooperation and coordination on security and politics. Although established with the same purpose, both organizations have different goals and integration principles from which to bring about different achievements. The paper analyzes and compares deeply the process of international economic integration of countries in the EU and ASEAN.