<![CDATA[Interfaith marriage in Indonesia presents a complex juridical dilemma arising from the interaction between religious family-law restrictions, constitutional rights, and population-administration rules. This study analyzes the normative relationship between the Compilation of Islamic Law (KHI) and the 1945 Constitution, examines legal uncertainty in marriage registration and its consequences for children, and formulates a maqāṣid al-sharia-based reconstruction aimed at protecting children’s civil rights. Using normative legal research with statutory, conceptual, case-based, and limited comparative approaches, the study distinguishes the hierarchy and function of the relevant norms and separates current positive law from proposals for reform. The analysis finds no automatic or absolute contradiction between the KHI and the Constitution; restrictions must instead be assessed within the constitutional framework of lawful and proportionate limitations. The principal concern lies in administrative and normative uncertainty that may burden children’s identity, parentage, and other civil rights. A reconstruction grounded in ḥifẓ al-nasl and maṣlaḥah al-ṭifl supports regulatory harmonization, clearer civil-status procedures, institutional reform, and convergence with the best-interests-of-the-child principle. These reforms should protect children without treating administrative registration as an automatic validation of an otherwise invalid marriage.]]>
