Environmental and sustainability issues have assumed significance, leading to social and legal pressures on the companies across the world to take steps to reduce and prevent adverse impact of their activities on the environment and to disclose this information to the concerned stakeholders. The present study aims at investigating the perceptions of executives from 26 listed Indian oil and gas companies on Corporate Environment Disclosures (CEDs)in the annual reports using a structured questionnaire.The questionnaire was constructed on the basis of eleven environmental indicators provided in international oil and gas industry guidelines for voluntary sustainability reporting framework. An attempt was made to determine whether the extent and type of environmental disclosures have correlation with executives’ position in the organization, their knowledge about the annual reports, their stock holdings in the company and the value stream to which the companies belonged. It was found thatthe responding executives were well aware of the environmental issues associated with activities across the value chain in the oil and gas industry. They agreed that these issues are material and must be disclosed in the annual reports, but had different perceptions on the importance of four environmental issues given in the questionnaire for disclosure in the reports. A significant statistical relationship was found between perceived corporate environmental disclosure index (PCEDI) and respondents’ positions in the company and their knowledge on the annual reports. It is suggested that a greater role to knowledgeable senior executives at key positions should be assigned to deal with sustainability disclosure affairs.