The transition to a circular economy (CE) necessitates robust governance and regulatory frameworks to ensure sustainable resource management, waste reduction, and economic resilience. This study delves into the critical elements of CE governance by examining policy instruments such as national strategies, legislative mandates, economic incentives, and multi-stakeholder partnerships. The key to this governance is the harmonization of efforts across governmental levels and sectors, facilitated by advanced regulatory tools such as extended producer responsibility (EPR), eco-design directives, and green public procurement. This study emphasises the significance of monitoring and reporting systems in tracking progress and ensuring accountability. Through an analysis of global case studies from the European Union, China, Japan, and other leading regions, this study identifies best practices and regulatory innovations while addressing persistent challenges. The findings emphasize the need for adaptive governance structures that can integrate technological advancements and respond to dynamic economic and environmental contexts. This comprehensive evaluation offers strategic recommendations for policymakers, industry stakeholders, and researchers to create effective regulatory environments that promote CE agenda and foster sustainable and resilient economic systems.