["Corporate Social Responsibility and Environmental Management, EarlyView. ", "\nABSTRACT\nThis study examines the nexus between board gender diversity (BGD), corporate social responsibility (CSR) performance, and financial outcomes in the context of an emerging country, Türkiye. The sample consists of Turkish non‐financial firms listed on Borsa Istanbul for the period 2008–2023. The findings indicate that BGD plays a significant positive role in improving CSR performance. Furthermore, BGD does not moderate the CSR‐accounting performance link but positively moderates the relationship between CSR and market‐based performance. This study extends the literature, testing the associations between BGD, CSR, and financial performance in an institutional context characterized by a soft regulatory framework for BGD. The results provide a business case justification for promoting gender‐diverse boards, as greater female representation enhances CSR performance and strengthens the market valuation of CSR initiatives. Accordingly, policymakers are encouraged to implement measures that foster BGD, given its potential to enhance firms' CSR engagement and support national sustainability goals.\n"]