GHG Protocol is a leading organization that provides standards, guidance, tools, and training for businesses and governments to effectively measure and manage greenhouse gas (GHG) emissions. They offer comprehensive global standardized frameworks to calculate emissions from private and public sector operations, value chains, and mitigation actions. With a 20-year partnership between the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD), GHG Protocol collaborates with governments, industry associations, NGOs, businesses, and other organizations.

GHG Protocol is widely recognized for its Corporate Accounting and Reporting Standard, which serves as the foundation for GHG reporting programs worldwide. In fact, 92% of Fortune 500 companies that responded to the CDP in 2016 used GHG Protocol directly or indirectly. Moreover, hundreds of cities around the world have committed to using GHG Protocol for Cities through their affiliation with the Compact of Mayors.

To support their standards and tools, GHG Protocol offers online training and a Built on GHG Protocol review service that acknowledges conformance to GHG Protocol's standards. Their continuous effort to update their standards and guidance is guided by multi-stakeholder governance bodies. Furthermore, GHG Protocol is actively involved in assisting countries and cities in tracking their progress towards achieving their climate goals