Legal Pluralism in Muslim-Majority Asia: Sharia, Customary Law, and Sustainable Development Goals

Abstract

Objective: This research aims to examine the coexistence and interaction of Sharia law, customary law, and international legal norms within Muslim-majority states in Asia, focusing on Southeast Asian countries such as Indonesia, Malaysia, and Brunei. The study is motivated by the complex challenges arising from legal pluralism in governance, human rights, and social justice, particularly in relation to SDG 16 (Peace, Justice, and Strong Institutions) and SDG 5 (Gender Equality). Theoretical framework: This framework combines legal pluralism theory with religious law, customary practices, and international human rights norms, focusing on how these frameworks shape legal systems and societal dynamics. It also explores challenges and opportunities in aligning local laws with international human rights, particularly on gender equality. Literature review: The review examines legal pluralism in Muslim-majority contexts, highlighting tensions between Sharia, customary law, and international human rights obligations, with implications for SDG 16 (inclusive justice) and SDG 5 (gender equality). Method: A qualitative comparative approach was used, collecting data from legal texts, case law, government policies, and interviews with legal experts and human rights advocates. Data analysis involved thematic coding and comparative synthesis to explore the intersection of legal traditions and human rights standards. Results: The findings reveal that legal pluralism manifests in diverse ways: Indonesia and Malaysia maintain dual legal systems incorporating Sharia and customary laws alongside secular law, while Brunei implements Sharia comprehensively with limited integration of customary or international norms. Challenges identified include conflicts over women’s rights, religious freedom, and compliance with international human rights standards, particularly in relation to SDG 5. Implications: The coexistence of multiple legal systems offers cultural inclusiveness but also risks legal uncertainty and inequality. Harmonization strategies and legal reforms are needed to ensure justice and rights protection while respecting cultural values, crucial for achieving SDG 16 (inclusive justice) and SDG 5 (gender equality). Novelty: This research provides a focused comparative analysis of legal pluralism in Muslim-majority Asian states, contributing to the discourse on reconciling religious, customary, and international legal frameworks for sustainable governance, aligned with SDG 16 and SDG 5.