In the network-centric era, social media governance, transcending traditional control, is defined as a multi-actor and participatory process for steering the systematic interaction of governmental and non-governmental actors across national and transnational domains. The aim of this applied and developmental research is to formulate an indigenous model of social media governance in the Islamic Republic of Iran by identifying its dimensions, components, and executive strategies. The research method is descriptive, employing a mixed quantitative-qualitative approach, where data were collected through library studies, expert interviews, and questionnaires, and analyzed using thematic analysis. This study explicates the social media governance model in the Islamic Republic of Iran as a multi-dimensional, dynamic, and normative system that, by moving beyond linear and directive approaches, seeks to establish smart, participatory, and networked governance. This model is founded on eight intertwined dimensions (law, technology, culture, society, security, economy, politics, and environment) and relies on upstream documents and Islamic-Iranian values. The model's executive mechanism is a continuous, data-driven, and feedback-based cycle that, through "policymaking," "regulation," and "facilitation," and while strategically distinguishing between domestic and foreign platforms, seeks to strike a balance among responsible freedoms, digital economy development, and national security. Ultimately, by leveraging emerging technologies such as artificial intelligence and emphasizing digital justice, this model offers a third path in the traditional dichotomy of freedom and security, aiming to transform cyberspace from a purely security-oriented arena into a platform for modern Islamic civilization-building and an alternative discourse against Western digital hegemony.