ESG may refer to:
- Earth System Grid. a gateway to International scientific data collections.
- Engineering Seismology Group, a microseismic monitoring and data analysis company from Canada.
- Environmental Social and Corporate Governance, the commonly accepted factors involved in Responsible Investment assessments
- ESG (band), formerly known as Emerald, Sapphire and Gold
- E.S.G., Houston based rapper
- Elektroniksystem- und Logistik-GmbH, a German system and software house
- Electronic Service Guide
- Election Support Group an international sponsored organization supporting the election process in Pakistan
- Escola Superior de Guerra
- Expeditionary Strike Group
- Experimental Study Group at MIT
- Dr. Luis Maria Argaña International Airport, in Mariscal Estigarribia, Paraguay (IATA code: ESG)