Given the expansion of business activities in the world and the potential for sustainability in creating opportunities, the category of sustainability has become one of the first goals of countries and companies. But in Iran, less attention has been paid to this issue. Therefore, the purpose of this study is first to provide a model for disclosing corporate sustainability and then the impact of factors related to signaling theory and stakeholders on corporate sustainability reporting.Therefore, in order to achieve the pattern of corporate sustainability disclosure (qualitative part), purposeful sampling method and Delphi method were used by 28 experts, and to test other hypotheses (quantitative part of the research), 117 companies listed on the Tehran Stock Exchange that were used by the Systematic elimination have been studied in the period 2011-2018. To test the hypotheses, panel regression models were used. Delphi test findings and Kendall coefficient show that according to the experts, out of 169 components studied, 80 components are included in the corporate sustainability disclosure model.Among the factors related to signaling theory, firm performance has a direct impact on the overall corporate sustainability index, disclosure from an economic and environmental point of view. In addition, the percentage of firm sustainability costs has a direct impact on the overall corporate sustainability index, public, environmental and social disclosure. Also, among the factors related to stakeholder theory, government ownership has a direct impact on the overall index and all aspects of corporate sustainability, and board ownership has a direct impact on the overall corporate sustainability index, public, economic and environmental disclosure. The findings of this study show the importance of requiring non-financial information disclosure for legislators and standardizers. The proposed model also improves stakeholder awareness of these aspects