Maritime diplomacy is an important aspect of international relations that focuses on the management and use of marine resources. In recent decades, the need to strengthen collaboration between countries has increased, making maritime diplomacy a highly effective tool in building global partnerships. The main context of this diplomacy includes issues such as maritime security, climate change, and marine resource management. Maritime security is a major concern in maritime diplomacy. Many countries depend on shipping lanes for trade and transportation. Collaboration in carrying out supervision, law enforcement, and fighting illegal activities such as piracy and fishing theft is very important to maintain stability and security in the oceans. International organizations such as ASEAN and bilateral arrangements between countries that share waters make it possible to address these issues more effectively. Climate change is a global challenge that requires cross-border cooperation. Maritime diplomacy allows countries to collaborate in addressing the impacts of climate change, such as rising sea levels and natural disasters. International forums, such as the UN Conference on Climate Change, provide platforms for discussion and joint action, with an emphasis on protecting marine ecosystems and sustainable development. Management of marine resources, including fisheries and energy, is a crucial aspect of maritime diplomacy. Cooperation in resource management not only increases efficiency, but also reduces the potential for conflict between countries. An ecosystem-based approach, where countries work together to protect and restore marine habitats, shows that maritime diplomacy is also oriented towards sustainability. Maritime diplomacy initiatives often involve drafting bilateral or multilateral agreements and cooperation. For example, the four countries that manage the Ocean Global Assessment collaborate in research and monitoring marine ecosystems. The knowledge generated from this collaboration is invaluable in making decisions that have a positive impact on maritime policy. From an economic perspective, maritime diplomacy plays a role in facilitating international trade. Safe and secure trade routes will increase investment and accelerate economic growth. Countries that develop diplomatic relations in the maritime sector can generally attract more investors, making the shipping and fishing sectors more sustainable. Capacity building is also an important element in maritime diplomacy. Developing countries often need assistance in technology and resources to successfully manage their maritime areas. By sharing knowledge and best practices through international cooperation, these countries can adapt to change, improve resource management strategies, and increase their economic resilience. Thus, maritime diplomacy is not just a strategic tool in international relations, but is also a major driver for global cooperation. Through an inclusive and collaboration-based approach, countries can work together to maintain the sustainability of marine resources, maritime security and overcome environmental challenges. Maritime diplomacy offers the opportunity to create a more connected and secure world, where shared interests can be realized through productive and mutually beneficial cooperation.