Arman Marhamati - Islamic Azad University Shiraz branch, Faculty of management and economics, Department of industrial management, Shiraz, Iran,
Aria Marhamati - Shiraz University, Faculty of management, economics and social science, Department of management, Shiraz, Iran,

A case study was conducted in Shiraz industrial region in order to examine the effect of green supply chain management on green performance and firm competitiveness. Thestudy used a descriptive, correlational methodology to address the research questions. A total of 110 executives and managers were selected from companies located in the Shiraz industrial Estate to participate in the study. A pre-designed questionnaire developed by Yang et al. (2013) was adapted to collect data. We employed structural equationmodeling and partial least squares (PLS) path analysis as a basis for data analysis. The findings showed that the company’s internal green practices have a positive and significant impact on external green collaboration; internal green practices and external green collaboration have a positive and significant influence on the company s greenperformance; and internal green practices, external green collaboration and the company s green performance have a positive and significant effect on firm competitiveness.Overall, the study findings suggested that strengthening green supply chain management improves green performance, which in turn increases firm competitiveness. Thoseinvolved in the green supply chain are required to consider these issues when managing the supply chain process

firm competitiveness, green collaboration, green practices, green supply chain management and performance