The global energy transition towards low-carbon systems has brought to the fore the underexplored sociopolitical dynamics shaping transition pathways in fossil fuel-dependent developing countries. This study addresses this critical research gap by conducting a comprehensive, multidimensional analysis of the complex interplay between public attitudes, interest group pressures, political institutions, and cultural narratives influencing Iran's energy transition strategies amidst evolving global realities. Employing a novel analytical framework that synthesizes resource dependence, sociotechnical transitions, punctuated equilibrium, and complex interdependence theories, the research draws upon rich insights from 11 semi-structured interviews with leading Iranian experts across policy, engineering, economics, sociocultural, and governance domains. Through a rigorous discourse analysis of interview data and an extensive literature review, the study examines the way in which entrenched hydrocarbon interests, institutional fragmentation, geopolitical tensions, public perceptions, demographic divergences, and cultural identities shape Iran's complex energy landscape. The findings underscore the importance of responsive communication, inclusive stakeholder engagement, adaptive governance, and regional cooperation in navigating the sociopolitical terrain underpinning Iran's sustainable energy transition. The study generates actionable policy recommendations spanning public outreach, political economy management, institutional capacity building, and international diplomacy, advancing theoretical understandings of energy transitions in resource-dependent Global South contexts, while providing guidance for policymakers navigating complex reform pathways amidst societal resistance and geopolitical uncertainties.