Sustainable development is one of the most important driving forces of business strategies and the banks have taken steps to implement principles of sustainability and move toward being sustainable. The aim of present study was design and formulate a conceptual framework for sustainable development in Iranian governmental banks. The present study was a basic research in terms of purpose that conducted by mixed method in exploratory model of Model based Development Tool, whereby in qualitative the grounded theory was used, and in quantitative the Delphi method and Shannon Entropy were employed. In qualitative, the population consisted all experts of sustainable development and board members of banks, as well as, senior managers of credit and human resources departments in Iranian governmental banks. And in quantitative, among the staff managers of Iranian governmental banks who held M.A degree or higher, 10 managers were selected by convenience sampling method. The results showed that, elites believe that the highest weights go to consequences (0.499), strategies (0.457), intervening conditions (0.450), core category (0.417), context conditions (0.416) and causal conditions (0.248) in the sustainable development of Iranian governmental banks, respectively. The banking sustainable development as an effective solution for using natural resources, minimizing effect of environmental pollutions, making the environment resilient to natural disasters, and managing environment and natural capitals to prevent physical incidents. Managers of Iranian governmental banks should be familiar with the goals and plans of sustainable banking and place it at the top of the vision and mission of the banking industry. پرونده مقاله