Abstarct: The present study aimed to investigate the mediating role of corporate social responsibility in the impact of green finance on green logistics and achieving net zero carbon emissions in the Iranian banking system. This research is applied-developmental in terms of purpose and descxriptive-survey of correlational type in terms of nature. The statistical population of the study included senior and middle managers, experts and specialists active in the fields of finance, supply chain, environment, energy and corporate social responsibility in selected branches of public and private banks in Tehran province. Using a non-random purposive sampling method (accessible purposive), 300 people were determined as the sample size. The data collection tool was a questionnaire consisting of 72 items in the form of four main constructs (green finance, corporate social responsibility, green logistics and net zero carbon emissions), whose validity and reliability were confirmed. The collected data were analyzed using SPSS version 27 and SmartPLS version 3 software using the partial least squares structural equation modeling (PLS-SEM) method. The findings showed that green finance has a positive and significant effect on corporate social responsibility, green logistics and net zero carbon emissions. Also, corporate social responsibility has a positive and significant effect on green logistics and net zero carbon emissions. In addition, the results indicated that corporate social responsibility plays a partial mediating role (with weak to near-moderate intensity) in the effect of green finance on green logistics and net zero carbon emissions. Model fit indices including SRMR (0.071) and GOF (0.541) indicated appropriate to strong fit of the conceptual model of the research. baxsed on the findings, it is suggested that monetary and banking policymakers develop specific frxameworks for evaluating the green finance performance of banks, and bank managers take effective steps to reduce carbon emissions by strengthening specialized green finance units and developing digital infrastructure.