The impact of global tsunamis on coastal communities is very diverse, covering significant economic, social and environmental aspects. Tsunamis often cause widespread damage, cause loss of life and encourage large population migration. In many cases, affected coastal areas suffer severe economic losses. Infrastructure such as homes, ports and tourism facilities was badly damaged, creating major challenges for economic recovery. The fisheries sector, one of the economic backbones of coastal communities, is also seriously threatened. Many fishermen have lost their boats, fishing equipment, and even fisheries resources due to pollution and changes in the ecosystem. In the long term, this could lead to food insecurity, especially in regions that depend heavily on seafood. The social impact of the tsunami is also no less important. Psychological trauma is felt by survivors who have lost their families and homes. The incidence of mental health disorders, such as PTSD (Post-Traumatic Stress Disorder), is increasing. Previously solid societies often experience fragmentation due to loss of members and stress, leading to shifts in cultural values and community structure. Education was also affected, with many schools destroyed. Children lose access to education, resulting in lower levels of literacy and future employment. Investment in educational rehabilitation is an important priority in recovery. From an environmental perspective, tsunamis worsen the condition of coastal ecosystems. Corals are damaged, mangrove ecosystems are destroyed, and pollution from waste can harm local species. Environmental revitalization is a new challenge in recovery. Governments and non-governmental organizations must collaborate to restore habitats and prevent future disasters. Technology and early warning systems are vital tools in mitigating tsunami risk. Educating coastal communities about tsunami signs and evacuation routes can save lives. Communities need to be involved in planning and implementing mitigation strategies to increase resilience to disasters. Preparedness and rapid response are also crucial. Training programs for rescue teams and communities must be strengthened. Regular simulations and education about how to act during a tsunami can improve the community’s ability to deal with such disasters. Overall, the impact of global tsunamis on coastal communities is complex and profound, affecting many aspects of life. Much work still needs to be done to recover from post-tsunami conditions, and expanding international support and attention from the global community is critical in helping these communities survive and thrive post-disaster.