Environment Support Group (ESG) is an independent not-for-profit non-governmental organisation, founded in 1996 and registered as a Public Charitable Trust in 1998. Its main functions involve research, training, campaign support, and advocacy on a variety of environmental and social justice issues.
ESG is amongst the foremost proponents in India for the reform of environmental decision making processes urging that the same be made more participatory and environmentally and socially just. ESG initiated or supported campaigns have been largely successful despite the nature of the issues being highly controversial and politically sensitive with national-level implications. In acknowledgment of its influencing role, ESG's services have been sought by a variety of regional, national and international agencies.