Today, the negative impact on the environment is felt most acutely and takes on a global character, which may be the cause of the environmental crisis. The relevance of this study is due to the fact that the implementation of corporate social responsibility programs for companies in the oil and gas industry has a tangible impact on the sustainable development of society in different countries of the world. The purpose of the master's thesis is to assess the environmental responsibility of enterprises in the oil and gas sector. In this work, the following research methods were used: theoretical and empirical analysis, as well as correlation analysis. The information base of the study was compiled by non-financial reports of PJSC Gazprom Neft for 2015-2018, which is published on the official website of the company and statistical materials of the association of the Russian Union of Industrialists and Entrepreneurs. During the writing of the master's thesis, a methodology for assessing the environmental responsibility of enterprises was developed, based on the use of basic indicators of corporate social responsibility and characterized by the introduction of indicators that take into account the specifics of the activities of oil and gas companies in the field of environmental protection, which will develop an adequate policy for investing in environmental objects and ensure comparability of information as in the Russian and foreign practice non-financial reporting. Such information may be of significant interest to consumers of oil and gas companies, and investors and credit organizations. Assessing the environmental responsibility of companies in the oil and gas sector will assess the effectiveness of environmental protection, assess the effectiveness of conducting socially responsible business in Russia and identify the most important environmental aspects in the activities of companies. The developed methodology will provide objective and comparable information on the level of environmental responsibility of oil and gas companies operating in Russia and the scale of the impact of their activities on the environment.