|Abstract||This study explores the communication techniques of NGOs in the sphere of capacity-building development, with a focus on South Sudan. Research indicates the importance of communication in establishing civil society in developing countries, especially those in post-conflict situations. Multiple theoretical frameworks are employed, including the excellence theory of public relations, the capacity-building development process, and conflict resolution theory. The thesis utilizes the content analysis technique for several local, regional and international organizations to evaluate their work in the country and develop a comprehensive model called the Public Relations and Capacity-Building Communication Model. It is comprised of five steps (also known as the five Es): Envision (Knowledge Management), Engage (Community Agency), Enable (Relationship Accountability), Establish (Symmetrical Partnership), and Evaluate (Societal Assessment). These steps guide a NGO through the capacity-building process with disciplinary public relations principles at the core. The findings and model join the important conversation about capacity building in South Sudan and other post-conflict nations, and the model is specifically designed for others to easily understand and teach it. Furthermore, this research supports cross-disciplinary collaboration and application, in this particular case communication and political science.