<![CDATA[Marriage registration has played a fundamental role in ensuring legal certainty and protecting the rights of spouses within the Indonesian legal system. Nevertheless, the continued prevalence of unregistered marriages has weakened women's legal position and limited their access to legal protection, particularly regarding marital status, property rights, inheritance, maintenance, and the civil rights of children. This study aimed to analyze the role of marriage registration in strengthening women's legal protection under Law Number 16 of 2019 concerning the Amendment to Law Number 1 of 1974 on Marriage. The study employed a normative legal research method using statutory, conceptual, comparative, and philosophical approaches. Legal materials were collected through library research from legislation, judicial decisions, official legal documents, and contemporary scholarly publications and were analyzed qualitatively using prescriptive legal reasoning. The analysis showed that marriage registration functioned not merely as an administrative obligation but as a preventive legal mechanism that established legal certainty and enhanced the protection of women's rights. The findings further indicated that effective marriage registration strengthened legal recognition of marital status, safeguarded property and inheritance rights, facilitated access to judicial remedies, protected children's civil rights, and promoted gender equality. The study concluded that strengthening the implementation of marriage registration under Law Number 16 of 2019 provided a more comprehensive framework for protecting women's legal rights, improving access to justice, and reinforcing legal certainty within Indonesia's family law system.]]>
