Purpose: This study aims to examine how Green Supply Chain Management (GSCM) practices, i.e., environmental impact, cost efficiency, customer satisfaction, and regulatory compliance, affect the Green Supply Chain Performance Score (GSCPS), considering the mediating roles of supplier engagement and technology adoption. Resource-Based View (RBV) theory is used, and the study fills a gap in previous research by investigating the combined and overall impact of these variables in a global context, as well as the effects of control variables such as company size, industry type, and annual revenue. Methodology: A quantitative research methodology was employed, with secondary data obtained from the sustainability and annual reports of 100 global firms. The study used a deductive approach based on a positivist research philosophy, with data analysis performed using SPSS for hypothesis testing and regression analysis. Findings: The findings indicate that environmental impact and technology adoption have a significant positive effect on GSCPS. However, cost efficiency, customer satisfaction, and regulatory compliance do not exhibit significant effects. Furthermore, supplier engagement did not mediate the relationship. Conversely, the control variables demonstrated a significant positive effect on GSCPS. Significance: This study contributes to the existing literature on Green Supply Chain Performance (GSCP) and provides practical implications for firms' stakeholders and policymakers.