Regulatory harmonization has emerged as a critical mechanism for facilitating global market access in an increasingly interconnected yet institutionally fragmented world economy. Differences in national regulations governing product standards, safety, environmental protection, data privacy, and competition often act as non-tariff barriers that constrain cross-border trade and investment. This paper examines the role of regulatory harmonization in enabling global market access by reducing compliance costs, enhancing transparency, and fostering mutual trust among trading partners. Drawing on institutional theory, international trade theory, and global governance literature, the study analyzes key forms of regulatory harmonization, sectoral applications, benefits, and challenges. The paper further explores the role of international organizations, regional trade agreements, and digital technologies in advancing regulatory convergence. Managerial and policy implications are discussed, followed by directions for future research.
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