This study examines the impact of government regulations on financial accountability and risk management in public sector institutions, addressing an important gap in regulatory governance literature that often treats these domains separately. Using a quantitative research design, data were collected from public sector institutions subject to formal financial management and risk governance regulations. The analysis employs descriptive statistics, reliability and validity testing, and regression and mediation analysis to assess the relationships among government regulation, financial accountability, and risk management. The results indicate that government regulations have a strong and statistically significant positive effect on financial accountability, reflected in enhanced transparency, internal control effectiveness, and responsiveness to audit findings. While regulation also positively influences risk management practices, the magnitude of this effect is comparatively weaker, suggesting that risk management remains more compliance oriented than strategic. Importantly, the findings reveal that financial accountability partially mediates the relationship between government regulation and risk management, highlighting the interconnected nature of these governance mechanisms. This study contributes to public sector governance literature by providing empirical evidence that effective regulation operates through both direct and indirect pathways. The findings offer policy relevant insights for regulators and public managers seeking to design integrated regulatory frameworks that strengthen accountability and improve risk governance in the public sector.