This article aims to analyze the dynamics of Islamization in the coastal areas of the Malacca Strait by emphasizing the role of maritime trade routes, Muslim scholars (ulama), Islamic political institutions, and cultural acculturation in shaping Malay Islamic identity. This study employs a qualitative approach based on library research by critically examining academic books, reputable national and international journal articles, and scholarly documents published within the last ten years (2015–2025). Data analysis was conducted using historical-critical analysis and content analysis to identify patterns, key actors, and driving factors in the Islamization process. The findings indicate that Islamization in the coastal regions of the Malacca Strait occurred peacefully, gradually, and contextually through trade interactions, scholarly networks, and the institutionalization of Islam within Islamic sultanates. Islam functioned not only as a belief system but also as an ethical, legal, and cultural foundation that was integrated with local customs. This process resulted in a distinctive form of Malay Islam characterized by moderation, inclusivity, and adaptability to social change. This article recommends strengthening coastal-based Islamization studies as an important reference for the development of Islamic history, Nusantara Islam studies, and contextual Islamic education in Southeast Asia
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