Citizen participation in public service co-production is essential for enhancing service delivery and fostering democratic governance. However, various barriers hinder effective citizen engagement, particularly in developing countries like Pakistan. This study aims to identify and analyze the social, cultural, and institutional factors that impede citizen involvement in co-producing public services. Utilizing a qualitative approach, the research draws upon secondary data sources such as academic articles, government reports, and case studies to explore these barriers comprehensively. The analysis is guided by a three-pillar framework encompassing social, cultural, and institutional dimensions. The social pillar highlights how low civic awareness, weak social capital, and limited community networks undermine collective participation and trust in public institutions. The cultural pillar reveals that entrenched traditional norms, hierarchical power structures, and language barriers restrict inclusive participation, especially among women and marginalized groups. The institutional pillar underscores how bureaucratic rigidity, complex administrative procedures, and a lack of political will discourage citizen engagement in decision-making processes. Addressing these intertwined challenges requires multi-level interventions, including civic education programs to strengthen social participation, cultural sensitivity initiatives to foster inclusivity, and institutional reforms to enhance transparency, accountability, and responsiveness in public service delivery. This three-pillar framework provides a structured understanding of the barriers to citizen participation and offers a roadmap for fostering more collaborative and democratic public service systems in Pakistan.