The geopolitical dynamics of Southeast Asia after the COVID-19 pandemic have undergone a significant transformation. Although the pandemic disrupted many aspects of life, countries in the region are starting to adjust to the new reality. One important issue is the shift in global power, especially related to the influence of China and the United States. Countries such as Indonesia, Malaysia and Vietnam are trying to strengthen their position in the international arena by increasing multilateral cooperation. ASEAN (Association of Southeast Asian Nations) plays an important role in encouraging dialogue and collaboration between countries, focusing on economic recovery and political stability. During the pandemic, ASEAN strengthened health and economic cooperation, which is an important foundation for post-pandemic growth. In a security context, the South China Sea issue is becoming increasingly crucial. The countries involved, such as the Philippines and Vietnam, continue to improve their military capabilities to meet the challenges of Chinese expansion. Meanwhile, the actions of the United States, increasing its military presence in the region, demonstrate its commitment to maintaining freedom of navigation. These tensions create complex dynamics in which countries in Southeast Asia must be smart in navigating their international relations. The post-pandemic economy also faces major challenges. Fluctuating global demand affects important sectors, such as tourism and manufacturing. Countries like Thailand, which depend on tourism, are starting to diversify their economies to reduce dependence. Digitalization is also increasing, with increased investment in information and communications technology as a way to drive inclusive economic growth. However, environmental challenges and climate change remain major concerns. Southeast Asian countries, which are vulnerable to natural disasters, are trying to implement sustainable policies. Cooperation on environmental issues, such as natural resource management and biodiversity protection, is increasingly important in developing policies that are responsive to climate change. Facing ever-changing geopolitics, countries in Southeast Asia are faced with the need to adapt quickly. Rapid population growth and urbanization also influence social and economic dynamics. Governments in the region are addressing these challenges through structural reforms and investment in infrastructure. Another social aspect is increasing the role of civil society and non-governmental organizations in promoting transparency and accountability. Awareness of human rights and democracy is increasing, putting pressure on governments to be more responsive to people’s needs. Strategic partnerships, both with large and regional countries, are key in overcoming this challenge. Indonesia, for example, plays an active role in economic and security diplomacy, improving relations with G20 countries and other stakeholder countries. Communities in Southeast Asia are also increasingly sensitive to global issues such as cyber security and mental health, which have been raised during the pandemic. Countries in the region are seeking to integrate mental health and social welfare policies into national development agendas. This transformation will certainly shape the geopolitical landscape in Southeast Asia in the coming decades. These countries are expected to be able to create a balance between national interests and regional collaboration with a deeper understanding of ever-changing global geopolitics.