The geopolitical dynamics of Southeast Asia in the post-pandemic era show significant changes triggered by internal and external factors. After passing through the global health crisis due to COVID-19, countries in the region are facing new challenges in terms of economic, political and security stability. First, the economic aspect becomes the center of attention. Southeast Asia’s economic recovery is experiencing varying dynamics between countries. Countries such as Vietnam and Indonesia are showing fast recovery thanks to good vaccine distribution and effective stimulus policies. In contrast, countries such as Myanmar and the Philippines are experiencing difficulties due to political instability and a prolonged pandemic, resulting in stunted GDP growth. Second, in a political context, many countries in Southeast Asia have adapted to changes in government systems and foreign policies. Thailand and Malaysia, for example, seek to avoid political uncertainty by promoting internal stability. Meanwhile, a shift in foreign policy is visible in the attitudes of ASEAN countries towards major powers such as China and the United States. These countries are trying to balance economic and security interactions with both powers, which has become increasingly complex in the wake of the pandemic. Third, security issues increasingly dominate geopolitical discourse. Issues such as the South China Sea dispute continue to be a major concern. The armed forces of countries such as the Philippines, Vietnam and Malaysia carry out military exercises to increase preparedness for potential conflicts. ASEAN as a regional organization seeks to strengthen cooperation in the security sector, although consensus is often difficult to achieve. Fourth, social changes also strengthen geopolitical dynamics. A society that is increasingly connected through information technology influences thought and political patterns. Social movements sparked by the pandemic are amplifying young people’s voices on issues of democracy, human rights and climate change. This shows that demographic and social shifts also contribute to shifts in political policy. Finally, environmental issues have become more urgent after the pandemic. Countries in Southeast Asia are trying to respond to the climate crisis through various sustainable initiatives. The development of renewable energy and policies to reduce carbon emissions is a key focus for securing the region’s future. This green initiative is also part of efforts to attract post-pandemic foreign investment. Overall, Southeast Asia’s geopolitical dynamics in the post-pandemic era reflect adaptation to rapid change. Each country faces unique challenges that require different strategies, while regional and intraregional cooperation is increasingly important in dealing with complex global issues. Adaptation to these changes will be a key factor in determining the region’s stability and development in the years to come.