Mental health interventions for post-disaster trauma in displaced communities in developing countries are crucial for fostering resilience and recovery. This paper focuses on integrating mental health into disaster preparedness and response plans as a vital strategy for addressing the mental health needs of displaced populations. As the frequency of disasters and conflicts increases, particularly in resource-constrained regions, the mental health needs of displaced populations have become a significant concern. Crucial interventions include culturally sensitive approaches considering affected populations’ local social, cultural, and religious contexts. Community-based programs that involve local leaders, traditional healers, and culturally appropriate communication tools are essential in promoting mental well-being and addressing trauma. Further, empowering communities through participatory approaches and ongoing evaluation of interventions ensures their sustainability and effectiveness. Partnerships between governments, NGOs, and international agencies are vital to creating a cohesive, comprehensive response, leveraging mobile clinics and telehealth solutions to overcome geographical barriers and improve access to care. Finally, addressing mental health stigma, building local capacity, and ensuring continuous funding for mental health services are critical for long-term recovery. A collaborative and culturally informed approach, aligned with sustainable development goals, is necessary to address displaced communities’ complex mental health needs and foster resilience in the face of future challenges.