Gender equality remains a pivotal international discourse encompassing social, political, economic, and cultural dimensions. Gender is defined as an analytical framework that distinguishes the roles of men and women through sociocultural perspectives. Historically, patriarchal structures have reinforced gender inequality by positioning men in positions of authority over women. This research is driven by the phenomenon of gender disparity on Mandangin Island, where women are frequently perceived as "second-class citizens." This patriarchal social structure acts as a significant barrier to women's involvement in regional development. This study employs a qualitative descriptive method. Data collection was conducted through observations on Mandangin Island and interviews with village government officials, community leaders, and local residents. The data analysis technique involved data preparation, comprehensive data reading, and systematic coding. The results conclude that the social structure in Mandangin Island, Sampang Regency, is still dominated by patriarchal values that restrict women's mobility. Local culture constructs the male role as the sole authority, indirectly creating unequal access to economic resources and education for women. However, being perceived as "second-class" has motivated women to engage actively in productive activities, such as marine product processing. Furthermore, the PEKA (Female-Headed Household) program in the context of Mandangin society serves as a crucial turning point, significantly challenging the deeply rooted patriarchal culture. In a region where social structures position men as the sole authority, PEKA provides a transformative influence toward gender empowerment.