An environmental organization is an organization coming out of the conservation or environmental movements that seeks to protect, analyse or monitor the environment against misuse or degradation from human forces.

In this sense the environment may refer to the biophysical environment or the natural environment. The organization may be a charity, a trust, a non-governmental organization, a governmental organization or an intergovernmental organization. Environmental organizations can be global, national, regional or local. Some environmental issues that environmental organizations focus on include pollution, plastic pollution, waste, resource depletion, human overpopulation and climate change.

• Global Alliance on Health and Pollution (GAHP)
• Global Biodiversity Information Facility (GBIF)
• School strike for climate or Fridays for Future (FFF)
• Global Green Growth Institute (GGGI)
• Intergovernmental Panel on Climate Change (IPCC)
• International Union for Conservation of Nature (IUCN)
• Intersectional Ecoliberation Movement (IELM)
• United Nations Environment Programme (UNEP)
• European Environment Agency (EEA)
• Partnerships in Environmental Management for the Seas of East Asia (PEMSEA)

Many states have agencies devoted to monitoring and protecting the environment:

These organizations are involved in environmental management, lobbying, advocacy, and/or conservation efforts:

These organizations are involved in environmental management, lobbying, advocacy, and/or conservation efforts at the national level:

• American Environmental Research Organization The AERO, Inc. (Wisconsin)

• Environmentalism
• Environmental community organizations
• Filmography of environmentalism
• List of animal rights groups
• List of nature conservation organisations
• List of environmental ministries
• List of green parties
• List of population concern organizations
• List of renewable energy organizations
• List of environmental organisations topics
• List of international environmental agreements

• Johnson, Erik W.; Scott Frickel (2011). "Ecological Threat and the Founding of U.S. National Environmental Movement Organizations, 1962–1998". Social Problems. 58 (Aug. 2011) (3): 305–29. doi:10.1525/sp.2011.58.3.305. This study examines the role of ecological threat in shaping the U.S. environmental movement. … Declines in wildlife populations are associated with the foundings of wildlife and wilderness protection organizations while increases in air pollution are associated with the foundings of organizations focused on ecosystem well-being and public health.